Chapter 21, Problem 21.6TC

Interpretation Introduction

(a)

Interpretation:

The given reaction is to be completed.

Concept introduction:

Unsaturated hydrocarbons (alkenes and alkynes) have carbon-carbon multiple bonds and thus undergo addition reaction. Alkenes and alkynes are capable of adding atoms of a molecule across the carbon-carbon double or triple bond respectively and give corresponding alkanes.

Interpretation Introduction

(b)

Interpretation:

The given reaction is to be completed.

Concept introduction:

Halogenation reactions are addition or substitution reaction in which halogen atom is added across the double bond or substituted for a hydrogen atom.

Interpretation Introduction

(c)

Interpretation:

The given reaction is to be completed.

Concept introduction:

Benzene gives substitution reaction with halogen in presence of ${\text{FeCl}}_{\text{3}}$. In this one hydrogen atom attached to the ring is substituted by the halogen atom to give corresponding halogenated benzene ring.