1. Which statement below is true about the purpose of an acid catalyst in nucleo
ID: 587937 • Letter: 1
Question
1. Which statement below is true about the purpose of an acid catalyst in nucleophilic acyl substitution reactions? A. The acid protonates the carbonyl carbon to make the oxygen atom a better electrophile B. The acid protonates the carbonyl oxygen to make the carbon atom a better electrophile C. The acid protonates the carbonyl carbon to make the oxygen atom a worse electrophile D. The acid protonates the carbonyl oxygen to make the carbon atom a worse electrophile 2. What functional group is created when a carboxylic acid reacts with SOCla/pyridine? A. Acid halide/acyl halide B. Ester C. Nitrile D. Anhydride 3. What is the name of the molecule shown? A. cyclohexanamine B. N-methylamidocyclohexane C. 1-methylcyclohexanoic anhydride D. N-methylcyclohexanecarboxamide 4. What type of functional group does not require "forcing conditions" to react with water? A. Amide B. Nitrile C. Anhydride D. EsterExplanation / Answer
1) option B is correct
Explanation: The electron density from oxygen atom attacks the proton of acid and forms oxonium cation which makes the carbonyl carbon better electrophile by abstracting electrons from carbonyl carbon.
2) option A is correct
Explanation: reaction of carboxylic acid with SOCl2 produces acid chloride as product.
3) option D is correct
Explanation: A methyl group is located on nitrogen atom and the functional group is amide present on cyclohexane ring so the name is N-methylcyclohexanecarboxamide
4) option C is correct
Explanation: The carbonyl carbon in anhydride is more electrophilic so it reacts very easily with water.
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