Activity No 2. Determine the order of a reaction given these data below by completing the table and plotting the following graphs (time along the horizontal axis) using MS Excel. You may include the values of r or coefficient of determination in each graph to indicate linearity. a. [A] vs time b. In [A] vs time c. 1 / [A] vs time Time ( s) [A] 0.320 In [A] 1 / [ ] 10 0.251 20 0.208 OF • 1573 G C1994 40 0.154 60 0.122 Hint. You may use the following assumptions to tell the reaction order. If [A] vs time graph is straight, it is a zeroth-order reaction. If In [A] vs time graph is straight, it is a first-order reaction. If 1/ [A] vs time graph is straight, it is a second-order reaction. G MAYNILA ALAKHAN AIG CITY SAGISA DIVISION

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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.