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Nitrobenzenen can be prepared from benze...

Nitrobenzenen can be prepared from benzene by using a mixture of conc `HNO_(3)` and conc. `H_(2)SO_(4)` in the nitrating mixture. Nitric acid acts as a

A

base

B

acid

C

reducing agent

D

catalyst

Text Solution

Verified by Experts

The correct Answer is:
A
During nitration, `NO_2^+` is formed from `HNO_3` as follows :

Thus, nitric acid acts as a base.
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For dofferemt reactions of H_(2)SO_(4) with (i) HNO_(3) and (ii) HClO_(4) , a. Write the equactions for the recactionsand identify the conjugate acids and bases: b. Expain the different behaviours of H_(2)SO_(4) II. Nitrobenze can be prepared from benzene by using a mixture of conc. HNO_(3) and conc. H_(2)SO_(4) In the nitrating mixture, HNO_(3) acrs are: a. Base, b. Acid c. Reducing agent, d. Catayst III. Among the following statements on the nitraction of aromatic compounds, the false one is: a. The rate of nitration of benzene is almost the sameas that of hexadeucterobenzene. b. The rate of nitration of touene is grater than that of benzene. c. The rate of nitration of benzene is greater than that of hexadeuterobenze. c. The rate of nitration of benzene is greater than that of hexadeuterobenezene. d. Nitration is an electrophillic subsitution reaction. IV. Select the correct alternatice(s). The following reaction occurs in a mixture of conc. HNO_(3) and cnc. H_(2)SO_(4) as: HNO_(3) + 2H_(2)SO_(4) rarr NO_(2)^(o+) + 2HSO_(4)^(o+) + H_(3)^(o+) Which of the following statements about this reaction is correctgt a. Nitric acid acts as a base. b. Sulphuric acid acts as a base. Sulphure acid acts as a dehydrating agent. d. Addition of H_(2)O will reduce the NO_(2)^(o+) concentration. e. HNO_(3) and NO_(2)^(o+) are conjugate acid-base pair.

Nitrobenzene can be prepared from benzene by using a mixture of conc. HNO_3 and conc. In the nitrating mixture, HNO_3 acts as a/an

Knowledge Check

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