Question

Phenol couple fastest with diazonium salt under following conditions--
(a) strong alkeline solution
(b) mildly alkaline solution.
(c) strong acidic solution
(d) mildly acidic solution

Answer 1

Answer:

a

Explanation:

Answer 2

Answer:

Phenol couple fastest with diazonium salt in a (b) mildly alkaline solution.

Explanation:

What is the reaction:

• Coupling is the reaction of diazonium salts with aromatic amines in a moderately acidic solution or with phenols in a gently alkaline solution to produce coloured compounds known as azo dyes.

What is coupling:

• The term 'coupling reaction' refers to a type of organic reaction in which two chemical species are joined together (usually with the help of a metal catalyst).
• The reaction of an organic halide with an organometallic compound with the general formula R-M, which favours the production of a new carbon-carbon bond, is an important type of coupling reaction.
• The compound generated as a product will have the formula R-R' if the organic halide in this reaction has the generic formula R'-X.