Experiment 15 · Calculations & Graphing Page 6 Studying the Temperature Dependence of the Rate Constant (k). 5. The following reaction is studied at 3 different temperatures. Below you will find the rate constant for a reaction determined at these temperatures. Use this data to answer the following questions A->B (min" 0.0409 min 0.0818 min"! 0.157 min! I (Celsius) 25.0 °C 35.0 °C 45.0 °C (a) Calculate In k and 1/T and provide the values in the table below. Ink (b) Plot In k vs. 1/T and attach the graph. It should be linear. (e) Calculate the slope of the graph of In k vs. 1/T. Show your work below. (d) Determine the Activation Energy of this reaction using the slope above. Show work below. (e) Determine the Activation Energy of this reaction using the first two data points and the two-point form of the Arrhenius Equation provided in this handout. Show work below. () Did you get the same value for the activation energy in parts (d) and (e) above?

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Catalysis and Enzymatic Reactions

Catalysis is the kind of chemical reaction in which the rate (speed) of a reaction is enhanced by the catalyst which is not consumed during the process of reaction and afterward it is removed when the catalyst is not used to make up the impurity in the product. The enzymatic reaction is the reaction that is catalyzed via enzymes.

Lock And Key Model

The lock-and-key model is used to describe the catalytic enzyme activity, based on the interaction between enzyme and substrate. This model considers the lock as an enzyme and the key as a substrate to explain this model. The concept of how a unique distinct key only can have the access to open a particular lock resembles how the specific substrate can only fit into the particular active site of the enzyme. This is significant in understanding the intermolecular interaction between proteins and plays a vital role in drug interaction.