Do the following 8. In a reaction mechanism, a substance that is produced in one step, and consumed in a later step is a(n): Intermediate. Tranistion state. Catalyst. Starting material.
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.
Do the following
8. In a reaction mechanism, a substance that is produced in one step, and consumed in a later step is a(n):
Intermediate.
Tranistion state.
Catalyst.
Starting material.
9. A substance that is present before and after the reaction takes place, and may increase the reaction rate by changing its mechanism is a(n):
Catalyst.
Intermediate.
Starting material.
Product.
12. An intermediate in an acid-catalyzed esterification has a partial _____ charge at its tetrahedral carbon center.
positive
negative
13. Water acts as a _______ in an acid-catalyzed esterification reaction.
leaving group
catalyst
strong base
None of these answers are correct
14. The number of particles with enough energy to overcome a chemical activation barrier ______ with increasing temperature.
increases
decreases
remains the same
15. Because the pKa values of water and alcohols are very similar, the equilibrium constant for esterification reactions is close to _.
1
10
0.1
0
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