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Effect of temperature on rate of reaction experiment

C6.2.1 describe the effect on rate of reaction of changes in temperature, concentration, pressure, and surface area; C6.2.2 explain the effects on rates of reaction of changes in temperature, concentration and pressure in terms of frequency and energy of collision between particles; OCR Combined science B: 21st Century. BCP8 Practical skill 04 CONCLUSION Anything that increases the frequency of the particles encountering/colliding with one another (such as heat) will increase the rate of the reaction itself, in this case - the dissolution/fizzing of the tablet Effect of Temperature on Reaction Rates Needed knowledge to perform this experiment • Collision theory • Arrhenius equation basic concepts • Relationship between reaction rates and temperature Objective Understand and test the relationship between temperature and the rate of a chemical reaction. Introduction According to the collision theory, a chemical reaction can occur only when the.

Increasing the temperature of a reaction/reagents results in an increase in the rate of reaction This is because as temperature is increased the particles of the reagents move faster and collide at a higer rate Also particles can overcome the reaction energy barrier at a faster rate According to kinetic theory, reactions occur when the reacting particles collide with each other. When the temperature is increased particles get more energy and hence the frequency of collision increases. Consequently the rate of the reaction also increases Usually, the rate of a reaction approximately doubles for every 10°C rise in temperature. The concentration and volume of both sodium thiosulphate solution and sulphuric acid are kept constant in each set of the experiment. Any change in rate of reaction is due to the difference in temperature

The effect of temperature on reaction rate Resource

Changes the reaction rate. Provides an alternative pathway for the reaction with a lower activation energy. The rate of reaction (at a given temperature) is faster with this. Causes a lower activation energy, which in turn makes the rate constant larger and, thus, the reaction rate higher. Is not consumed, but rather used and then regenerated In reaction with between gases, increasing the pressure, increase the reaction rate. Temperature - as we increase the temperature, we increase the reaction rate. Raising the temperature makes particles collide more often in a certain time, and makes it more likely that collision results in a reaction experiment: the effect of temperature on the rate of an enzyme catalzyed reaction 1. What is your formally worded hypothesis regarding the effect of temperature on the rate of enzyme activity? Once you have formed your hypothesis, FULLY explain the information you used to develop this hypothesis We test the effect of temperature on the rate of reactions

Effect of Temperature on Rate of Reaction Alka-Seltzer

 The Effect of pH on Enzymatic Reaction Rate Abstract Enzymes are affected by changes in pH. The most favorable pH value— the point where the enzyme is most active—is known as the optimum pH. This experiment was conducted to determine the effect of pH reaction rate on an enzyme, catalase, from yeast. The experimental results indicate. As you increase the temperature the rate of reaction increases. As a rough approximation, for many reactions happening at around room temperature, the rate of reaction doubles for every 10°C rise in temperature. You have to be careful not to take this too literally. It doesn't apply to all reactions

Experiment to find Effect of Temperature on Rate of Enzyme

Higher temperatures tend to speed up the effect of enzyme activity, while lower temperatures decrease the rate of an enzyme reaction. At higher temperatures, more molecules collide, increasing the.. Hypothesis: I believe the rate of reaction will speed up as the temperature increases until it reaches about 37oC, which is the body temperature, where it will begin to slow down and stop reacting

Rate of reaction = 1 / time taken for the solution to turn opaque. In order for the effect of temperature on rate reactions to be investigated, all the other factors must be kept constant. Hypothesis As the temperature of the mixture increases, the rate of reaction will increase The effect of temperature on this reaction can be measured by warming the sodium thiosulphate solution before adding the acid. The temperature must be measured after adding the acid, because the cold acid cools the solution slightly.This time, the temperature is changed between experiments, keeping everything else constant Reactions proceed faster at higher temperatures because increasing the temperature also increases the average kinetic energy of the reactant molecules, making it more likely that a collision between two reactant molecules will have sufficient energy to initiate the reaction. An old rule of thumb states that increasing the temperature by 10 °C doubles the rate of reaction Follow us at: https://plus.google.com/+tutorvista/Check us out at http://chemistry.tutorvista.com/physical-chemistry/reaction-rates.htmlReaction RatesAs you.

EXPERIMENT 5 Effect of Temperature on Reaction Rate

The traditional experiment in which sodium thiosulfate solution reacts with acid is potentially hazardous as sulfur dioxide is released as a reaction product. This is particularly risky when investigating the effect of temperature on rate as the sulfur dioxide is driven out of solution at elevated temperatures In this experiment, the reactions were done at four different temperatures in order to observe the effect of temperature on the rate of reaction. In studying the kinetics of a reaction, it is also important to consider the effects that potential catalysts or inhibitors can have on the reaction rate. These effects were observed by adding one drop of Ag+1 or Cu+2 solution to some of the data runs and comparing the results to data runs with no additives For many chemical reactions a general rule of thumb is that the rate of a chemical reaction doubles with every 10°C temperature increase. Why is this? Effect of Temperature on the Speed of a Chemical Reaction: On the molecular level, the determining factor of the speed of a chemical reaction is the collisions between molecules An experiment can be exothermic or endothermic. For a reaction to occur, there is the requirement of a particular temperature. If the favorable temperature changes during the experiment because of the heat generation or absorption, that can hinder the experiment's process. Here is a laboratory diagram that shows the process of the experiment between sodium thiosulphate and hydrochloric acid Question: M-19 EXPERIMENT M - EFFECT OF TEMPERATURE ON RATE OF REACTION POSTLAB ASSIGNMENT Name Lab Period _Lab Room TA How Your Work - Answers Without Supporting Work Will Get Zero Marks. Give Units And Use The Correct Number Of Significant Figure. 1. Complete Table I (page M-21) And Include It With This Postlab Assignment

Experiment: The rate of reactions and temperature - Free

  1. The effect of temperature on the rate of reaction Aim: The aim of this experiment is to find out how temperature affects the rate of a reaction. Hypothesis: I predict that the higher the temperature, the faster the rate of the reaction. Introduction: For a reaction to take place collisions must have enough kinetic energy to break chemical bonds. This energy is known as activation energy
  2. Effect of Temperature on rate of Reaction. The rate of reaction is a function of many things, including surface area, concentration and temperature. For a reaction to take place, the molecules must collide with enough energy (called the Activation Energy, EA) Consider the reactant molecules to be at a particular temperature
  3. The effect of Temperature on Enzyme •The rate of an enzyme catalyzed reaction is affected by changes in temperature •Each enzyme has a temperature that it works optimally in called (Optimum Temperature) •For most enzymes, the optimum temperature is at or above the temperature of the cells in which the enzyme is found in vivo
  4. Practical - effect of changing the temperature on the rate of reaction. Investigate the effects of changing the conditions of a reaction on the rate of a reaction by observing a colour change
  5. Rates of Reaction Menu, from Chemguide Plop, Plop, Fizz Fast: The Effect of Temperature on Reaction Time, from Science Buddies. This activity brought to you in partnership with Science Buddies
  6. ed by investigating the effect of the concentration of the reactants on the rate of the persulfate-iodide.
  7. e the effect of temperature to the conversion of the solution

Effect of Temperature on Rate of Reaction (Class 12

  1. And the symbol equation for it is: Na2S2O3 + 2HCl →, S + SO2 + 2Na + H2O. Before conducting my experiment I will research into, amongst other things, the factors that affect the rate of a reaction. This is so that I may enough information to understand the effect of temperature on the rate of a reaction and also gain appropriate understanding.
  2. The Effect Of Temperature On The Reaction Rate Of Hydrochloric Acid And Magnesium 1059 Words | 5 Pages. investigate the effect of temperature on the reaction rate of hydrochloric acid and magnesium. Introduction: Chemistry happens everywhere, not just in a lab. Matter interacts to form new substances through a process called a chemical reaction
  3. ary experiment to design an investigation that will focus on one or more factors affecting reaction rates
  4. The goal and aim of this experiment is to surmise the effect of increasing temperature on the rate of a reaction, by raising the temperature of a reaction (independent variable) and subsequently measuring the time taken for the X not to be visible through the glass of the conical flask, in which the reaction will reside (dependent variable)

Temperature changes have profound effects upon living things. Enzyme-catalyzed reactions are especially sensitive to small changes in temperature. Because of this, the metabolism of poikilotherms, organisms whose internal body temperature is determined by their surroundings, are often determined by the surrounding temperature. Bakers who use yeast in their bread making are very aware of this heterogeneous reaction), nature of reactants, and the presence of a catalyst. In this experiment, you will carry out a different reaction, but you will again investigate the effect of the concentration of reactants (in Part I) and the temperature (in Part II) on the reaction rate. This experiment involves a reaction that is sometimes called an. There is an enzyme known as catalase in cells which dramatically increases the rate of decomposition of hydrogen peroxide.catalase2H2O2 2H2O + O2This type of reaction where a molecule is broken down into smaller pieces is known as a catabolic reaction.In order to investigate the effect of temperature on the activity of catalase, I will record. The effect of pH on the speed of enzyme interaction with substrate chemicals Hypothesis: About pH: If the pH level is less than 5, then the speed of the enzyme reaction will be slower. About temperature: If the temperature stays the same, then the speed of the enzyme reaction will not be completely affected

Temperature affects the rates of enzymatic reactions in two ways. Higher temperatures increase the rate of the hydrolysis reaction, but also increase the rate of thermal deactivation of the enzyme. The effect of temperature on the kinetic parameters was studied by performing lactose hydrolysis experiments at 15, 20, 25, 30, and 40 degrees C This reaction rate experiment explores the affects of surface area, temperature, and pressure on the rate of a chemical reaction. In this experiment, the reaction is between an Alka seltzer tablet (sodium bicarbonate + citric acid) and water. When an Alka seltzer tablet is placed in water, the H+ ions from citric acid react with the bicarbonate.

How does the temperature affect the rate of a chemical

Experiment 4 Effect of Concentration and Temperature on Rate of Reaction (Dissappearing Cross) Purpose: To observe the effect of concentration and temperature upon the rate of the reaction of sodium thiosulfate with hydrochloric acid. 3. The temperature 4. Catalysis. Before a reaction can occur, the reactants must come into direct contact via. 14. Click Experiment > Stop Collection on Logger Pro. 15. Pull the Gas Sensor out and wipe the residue off the Sensor, the container, and the graduated f Design Lab: Rates of Reaction Yukiko Takayanagi cylinders thoroughly so that these are as dry as possible. Use the tweezers to wipe off residue inside the probe containers 6. When the reaction mixture just turn colourless stop the timer and record the time ( in seconds). Measure and record the temperature of the reaction mixture. 7. Work out the reaction rate. 8. Repeat this procedures another three times but at higher temperatures. 5. ASSESSMENT SHEET The Effect of Temperature Changes on Reaction Rate 1 Purpose: To figure out the effect of temperature on the reaction rate of enzyme reactions. Hypothesis: Higher temperatures cause a faster reaction rate, therefore more glucose will be present when we test it. Lower temperatures will slow down the reaction rate, therefore less glucose will be present. The test tube heated to above 45 degrees. 64. The effect of temperature on reaction rate Topic Rate of reaction. Timing 60 min. Description Sodium thiosulfate solution is reacted with acid, a precipitate of sulfur forms. The time taken for a certain amount of sulfur to form is used to indicate the rate of the reaction. The effect of temperature on the rate of reaction can be investigated

Rate of reaction

Effect of Temperature on a Chemical Reaction Science Experiments Project Ideas, Models, Expo Topics, Exhibition Activities fir CBSE ISC Stream Students and for Kids in Middle school, Elementary School for class 5th Grade,6th,7th,8th,9th 10th,11th, 12th Grade and High School , MSC and College Students Scaffolded experiment worksheet for students to explore the effect that temperature, concentration and surface area has on the rate of a chemical reaction. Three full experimental methods included. Suitable for class 9, class 10 and class 11 Methodology: Modifications: In this experiment, the concentration of HCl is decreased to 1.5M and 0.5M, which are smaller than 2M acid. This affects to the rate of reaction, which is lowered the rate of reaction in order to conform the hypothesis that by increasing the concentration, the rate of reaction will increase or the higher the concentration, the faster the rate of reaction 3:09 describe experiments to investigate the effects of changes in surface area of a solid, concentration of a solution, temperature and the use of a catalyst on the rate of a reaction The rate of a chemical reaction can be measured either by how quickly reactants are used up or how quickly the products are formed

This page describes the factors controlling the speeds of chemical reactions and the collision theory behind it discussed. The factors affecting the speed of reaction are also presented using particle models to give a theoretical basis to the rules on the effects of concentration, pressure, temperature, solid reactant particle size (surface area), stirring, catalysts and light Due to temperature being a factor that effects the rate of reaction, the fact that the room temperature was different on the two days that the experiment was completed, the results would have been affected. This could affect Table 1 and Table 4 and the accuracy of these results The purpose of this experiment was to determine the reaction order and write a rate equation with respect to changes in permanganate ion and oxalic acid concentrations and to examine the effect temperature has on the rate of the reaction 1 The aim of this experiment - Understanding the effect of temperature variation on the rate of reaction between hydrochloric acid and sodium thiosulphate. Theory: The rate of chemical reaction is directly proportional to the temperature. As the temperature increases, the reaction rate also increases Rates of Reaction Experiments Worksheets. Learning Outcomes: 1. To investigate the effect of concentration of Sodium Thiosulphate in a reaction with Hydrochloric Acid. 2.To investigate the effect of temperature of Sodium Thiosulphate in a reaction with Hydrochloric Acid. 3a. To observe the effect of surface area (particle size) on the rate of.

The Effect of Temperature on the Rate of Catalase Activity

The temperature effect on stoichiometry, cation ordering, and reaction rate may be explained by enhanced dehydration of Mg at higher temperatures (Lippmann, 1973), thus allowing Mg to more easily participate in the reaction The results from the temperature experiment show that the optimum range for rate of reaction catalysed by yeast was between 45 o C and 60 o C. The temperature increased the rate of reaction, once the optimum point had been reached the rate of reaction decreased as the denaturation process began

Experiment M: Effect of Temperature on Rate of Reaction

An Experiment to determine the effects of Temperature on a Chemical Reaction Aim To examine the effects of temperature changes on the rate of reaction between oxalic acid and acidified potassium permanganate solution by varying the temperature of the reaction mixture. Equation 5(COOH) 2(aq) + 6H + (aq)-+ 2MnO 2(aq) → 2Mn 2+ (aq) + 10CO 2(g. Hypothesis As the reaction temperature of amylase solution and starch solution increase, the reaction rate of amylase and starch will increase. The experiment was conducted with several temperatures: 0°; 20° (room temperature); 30°; 35°; 63° Materials: 10ml 0.2% starch. 10ml 0.3% amylase. Several drops of Amount of iodin When the sodium thiosulphate temperature was 15°C, the average rate of reaction was 399 seconds, this was the slowest reaction rate as the particles weren't colliding very quickly so the reaction took longer. When the sodium thiosulphate was 18°C it was still quite a slow reaction because the particles weren't moving around as much, this.

Rate of reaction = volume of gas produced ÷ time. Devise a suitable method for investigating the effect of a given variable on the rate of a reaction. You can measure what effect a change in temperature, concentration and surface area and a presence/absence of catalyst can have on the rate of reaction The reaction rate of catalase on hydrogen peroxide was measured on a scale of 0-5 (0 being no reaction and 5 being fastest rate) based off the observation of bubbles during the reaction. The experiment tested the effects of catalase in liver on hydrogen peroxide at different temperatures and pH Experiment 3 Chemical Kinetics - Determining the Rate Equation Introduction: In order to be in a position to manipulate any operation, one has to know all the fine details of the system and where and how one might apply subtle changes to affect the outcome. When looking at chemical reactions, it i

Enzyme LabEnzyme Rate of Reaction Trypsin - YouTube

Define rate of reaction. Define collision theory. List ways of finding the rate of a reaction. Explain why a particular method of finding the rate is suitable for a specified reaction. Administration. Students should work in pairs, and the class should be split into 4 groups Effect of Temperature on Rate of Reaction A chemical reaction occurs when there is a chemical change in one or more substances. Physical Change Chemical Change Changes the look or shape of a substance but does not make a new substance; no chemical bonds break or form. Produces new substances; chemical bonds break and new bonds form

Illustrating the effect of temperature using an experiment. A commonly used experiment to show the effect of temperature on rate is the reaction between dilute hydrochloric acid and sodium thiosulfate solution which you will already have seen on the page about the effect of concentration on reaction rates If you were a chemical manufacturer you would certainly be interested in finding ways to increase the rate of production. One way is to do the reaction at a higher temperature, and in this experiment you can see what effect temperature has. We'll use a reaction that is easy to do in school. For example, adding hydrochloric acid to sodium thiosulfat

In my point of view this experiment was successful as it taught our group the effect of temperature in reaction rate. If this experiment were to take place again I would add more tests to record the reactions of different substances Given that the initial rate constant is 0.0170s-1 at an initial temperature of 30 C , what would the rate constant be at a temperature of 120. C for the same reaction described in Part A if the Ea eq DISCUSSION 1. How does the temperature affect the reaction rate for this experiment? The temperature affects the reaction rate because as the Collision theory states, the higher the temperature, the faster the molecules will vibrate, and that means that more collisions will happen, which means that the chemical reaction will happen faster The quantitative effects of CO2 availability and self-cooling on the rates and chemistry of interface processes, could perhaps be determined by extending the Beruto and Searey approach [57] to reactions in controlled CO2 pressures [66] or at higher temperature where self-cooling contributions become significant Two factors which had to be kept in the experiments has been the volume and the pressure. 3. How was the rate of the reaction determined? The rate of reaction is determined when the solution turn colourless. 10. RESULTS Time (sec) Temperature (ºC) Reaction rate 126 40ºC 0.0079 66 50ºC 0.015 46 60ºC 0.022 15 70ºC 0.066 11

Conclusion. We've concluded that as temperature increases, rate of reaction increases. In our model, the lower temperatures of 0-22 degrees Celsius produced no rust molecules within two minutes (0 molecules/min) while the higher temperatures of 30-50 degrees Celsius produced 2-8 rust molecules in two minutes To investigate the effect of temperature on the initial rate of an enzyme-catalysed reaction. Independent Variable. Temperature of each enzyme solution (water baths at 10°C, 20°C, 30°C, 40°C and 50°C will be used) Dependent Variable. Time taken for the solution to turn pink (measured in seconds using a stopwatch) Control Variable

Effect Of Temperature On Reaction Rate, Sample of Essay

The purpose of this study was to investigate if the temperature of vinegar had any effect on the time it took for its reaction to stop, when mixed with baking soda. It was hypothesized that the temperature of the vinegar will cause a change in reaction time, specifically colder temperatures causing a slower reaction time, while hotter resulted in a faster time. Four different temperatures of. Under normal temperature and conditions, it remains solid, but when some extra heat is applied, it dissolves to give sodium sulfate and sodium polysulfide. Effects of Temperature on Rate of Reaction. From this reaction, we get precipitate of sulfur forms The data table for this experiment contains the results that prove how the different temperature levels affect the rate of reaction. The observations prove that a lower temperature does decrease the rate of reaction, and that a higher reaction rate occurs when the temperature increases Rate of Reaction Lab. Students in middle school and high school learn that the rate of a chemical reaction can be affected by concentration, surface area, temperature, and catalysts. This simple experiment compares the rate of reaction using ground chalk (greater surface area) and whole pieces of chalk (less surface area) when chalk reacts with. In the graph below, we plotted the relative reaction rate (1/time taken to see a colour change) against the temperature. As the temperature increased, the time for a colour change to be seen was less (1/t was bigger). At a certain point, the relative reaction rate started decreasing. This was the optimum temperature (~ 37°C)

Experiment: the Effect of Temperature on The Rate of

Effect of varying temperature on the rate of CO 2 production in baker's yeast (Saccharomyces cerevisiae) Hillary Janssens, Lisa Kim, Icel Lee, Melody Salehzadeh ABSTRACT We conducted an experiment to find the optimal temperature for cellular respiration of Saccharomyces cerevisiae. Respirometers were incubated in water baths at temperatures of If the temperature of the reaction increases, so does the average rate of the reaction. In the temperature and reaction rate experiment make sure the learners do not shake the test tubes. Shaking gives energy to the reaction and affects the rate. The test tubes should be left as still as possible once the effervescent tablets have been added number of variables such as temperature, concentration and volume. By varying one of these and keeping the others constant, the effect on rate can be studied. The inverse of the time taken to obscure the cross is the measure of reaction rate used in this experiment. (i) Effect of concentration. Chemicals and Apparatus . 0.l M sodium thiosulfate. Temperature's Effect on the Fermentation Rate of Yeast. Abstract. The rates of chemical reactions are affected by temperature. The purpose of this experiment was to test the effect of five different temperatures on the rate of carbon dioxide production in yeast by measuring the fermentation rate The rate at which the chemical reaction is occurring, is basically known as rate of chemical reaction. It usually gets affected in the presence of catalyst or increases/decrease in temperature

Rate of Reaction - the Effects of Concentration and Temperature. This resource describes the use of a potassium iodate and starch reaction to investigate the effect of concentration and temperature (independently) on rate of reaction. The protocol is quite detailed in how to make up the reagents and run the reaction but is more sketchy on its. The rate of reaction, and consequently the time taken to obscure the cross, depends on a number of variables such as temperature, concentration and volume. By varying one of these and keeping the others constant, the effect on rate can be studied

CTSC practical experiment - Temperature & rate of reaction

Aspx, january experiment essay of rate the on of effect temperature accessed jun on strategic cooperation international hindu conference held in new delhi on th september, india tv chairman rajat sharma has been elected as chairman on th. K a if the child is riding such that the photograph of general miramon right Repeat this experiment, using 100 mL of 1 M HCl at a temperature 10 °C higher than the temperature of the acid in your original run. Compare the results to your data for the 1 M and 2 M HCl at the lower temperature. Review Questions. Q1: What effect did you observe concentration to have on reaction rate

1 - The Iodine Clock Reaction - Chemistry LibreText

The aim of this experiment is to find out the rate of reaction between amylase and starch in various temperatures. Hypothesis Because the reaction of amylase and starch is dependent on the temperature of the environment, my hypothesis is that as the temperature rises to its optimum level, the rate of reaction will increase 2 Information about the effect of changes of concentration on the rates of some reactions is given below. For each example, use the information to write the rate equation for the reaction. a. The rate is proportional to the concentration of cyclopropene. b →2N 2O(g) 2N 2(g) + O 2(g) The rate is proportional to the concentration of nitrogen(I. Home / Edexcel IGCSE (9-1) Chemistry / Revision Notes / Rates of Reaction / Experiment: Effect of Catalysts on the Rate of Reaction Experiment: Effect of Catalysts on the Rate of Reaction samabrhms11 2019-06-02T23:34:42+01:0

In the second part of the experiment, there was a steady increase in reaction rate with temperature (see Table 2) up to 37°C. The pre-boiled catalase did not react to produce any 02. Three two-sample t-test were performed between the boiled and cold reaction rate (p = 0.000112721), the cold and room temperature reaction rate (p = 0.000243814. of the reaction. You will be able to find the order of reaction for each reactant and hence the rate equation for the reac tion. • Investigate the reaction at different temperatures to determine the effect of temperature on the rate and hence determine the activation enthalpy for the reaction The aim of this experiment is to verify the effects of surface area of solid reactants and concentration of aqueous reactants on the rates of acid-base chemical reactions. Therefore, we sought to test the duration of reaction of equal lengths Magnesium ribbons with reducing concentrations of hydrochloric acid

Data Observation Results - Lab 6-b: Factors AffectingCore practical 9: Investigate factors affecting the rateEnzyme-Catalyzed Reactions— What Affects Their Rates?

Results Table 2: Reaction Rate as Dependent Upon Temperature (see Graph 2) Temperature ( °C) 5 10 15 20 25 35 Rate of Reaction (M/s) x 10-3 0.1587 0.6579 2.326 Average Rate of Reaction (M/s) x 10-3 0.1563 0.3125 0.6250 1.250 2.500 5.000 Discussion: According to the data the purpose was achieved. In the study of the effect of A student investigated the effect of temperature on the rate of a reaction. Figure 1 shows an experiment. Figure 1 € The student: •€€€€€€€€put 50 cm3 sodium thiosulfate solution into a conical flask •€€€€€€€€heated the sodium thiosulfate solution to the required temperature However, if the temperature of papain goes beyond 65°C, then the rate of reaction will decrease as the temperature increases. Figure 2: Graph showing the effect of temperature on reaction rate. The effect of pH and temperature on the reaction rate of the enzyme catalase. INTRODUCTION. Enzymes are proteins produced by living cells that act as catalysts during a reaction, meaning they lower the activation energy needed for that reaction to occur. Activation energy is the amount of energy required to start a chemical reaction Part One: Effect of Substrate on Catalase Activity. Procedure. Three test tubes were labeled and marked at the 1 cm and 5 cm levels. Shake the bottle of catalase thoroughly to mix contents before dispensing into the test tubes. Tube 1. Catalase was added to the 1 cm mark. Hydrogen peroxide was added to the 5 cm mark The results of these experiments can be discussed at various levels of sophistication and are consistent with enzyme kinetics as described by the Michaelis-Menten model. 1 The experiments can be extended to look at the effect of temperature on the rate of reaction. For enzyme reactions such as this, the reaction does not take place if the.