Question

Why is sulfuric acid added in an Esterification reaction? (SELECT ALL THAT APPLY)

a. It neutralizes base produced in the reaction.

b. It pushes the reaction to completion by dehydrating the product.

c. It is used as a polar protic solvent

d. It activates the carbonyl of p-aminobenzoic acid making it more reactive.

e. A low pH is needed for the reaction to occur

Which following statement statements is wrong for Benzocaine? (SELECT ALL THAT APPLY)

A. It is an aromatic carboxylic ester.

B. Benzocaine is acidic in nature.

C. It is basic in nature.

D. Benzocaine is used to reduce the pain or discomfort caused by sore throat, teething pain, rectal irritation, hemorrhoids etc.

E. It does not show any side effects if you take more than the dose.

F. It is a colorless trapezial crystal.

Which following statement statements is wrong for Benzocaine?

A. It is an aromatic carboxylic ester.

B. Benzocaine is acidic in nature.

C. It is basic in nature.

D. Benzocaine is used to reduce the pain or discomfort caused by sore throat, teething pain, rectal irritation, hemorrhoids etc.

E. It does not show any side effects if you take more than the dose.

F. It is a colorless trapezial crystal.

Answer 1

H2SO4 act as dehydrating agent. Basically it increases the fraction of particles with lowered Ea. Furthermore it increases number of collisions , number of frequent effective collision and increase the rate of product formation. A concerted mechanism is attached here . ..

so option b ,d , and e are correct one for the first question..

Benzocaine is the ethyl ester of p- amino benzoic acid. It is neutral having pH around 7 to 7.2 and aromatic in nature. It is also colourless. It is also used for pain . So the only worng answer is option e that is side effects like pulmonary aspirations, coma, irregular heartbeat etc.