In the conversion of benzaldehyde to benzoin exp. Cyanide ion was used as catalyst in such condensation reaction, for many properties. One of the following properties is False: a. Cyanide ion readily adds to carbonyl group of aldehyde b. It could catalyze proton transfer C. It is a good leaving group d. Cyanide group can stabilize the carbocation intermediate formed through resonance. In the oxidation of p-nitrotoluene to p- nitrobenzoic acid experiment, in order to remove the chromium salts from the crude acid product: a. Wash with 10% NaOH solution then by 5%H2SO4 solution b. Warm with 5% H2SO4 solution C. Heat with dilute NaOH d. Wash with 5% Na CO3 solution and then with 10% HCI solution
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.
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