Chapter 10: Haloalkanes and Haloarenes

\[Bromobenzene  < 1  - Bromobutane  < 1  - Bromopropane  < 1  - Bromoethane\]

\[Bromobenzene < 1  - Bromoethane  < 1  - Bromopropane  < 1  - Bromobutane\]

\[1 - Bromopropane  < 1  - Bromobutane  < 1  - Bromoethane  < Bromobenzene\]

\[1 - Bromoethane  < 1  - Bromopropane  < 1  - Bromobutane  < Bromobenzene\]

(a) and (e) both are nucleophiles.

In (c) carbon atom is sp3 hybridised.

In (c) carbon atom is sp2 hybridised.

(a) and (e) both are electrophiles.

The given reaction follows the SN2 mechanism.

(b) and (d) have the opposite configuration.

(b) and (d) have the same configuration.

The given reaction follows the SN1 mechanism.

Intermediate (c) is unstable because in this carbon is attached to 5 atoms.

Intermediate (c) is unstable because carbon atom is sp2

Intermediate (c) is stable because carbon atom is sp2

Intermediate (c) is less stable than the reactant (b).

A carbocation will be formed as an intermediate in the reaction.

OH–will attach the substrate (b) from one side and Cl- will leave it simultaneously from the other side.

An unstable intermediate will be formed in which OH– and Cl– will be attached by weak bonds.

The reaction proceeds through an SN1 mechanism.

The rate of reaction depends on the concentration of only (b).

The rate of reaction depends on the concentration of both (a) and (b).

Molecularity of reaction is one.

Molecularity of reaction is two.

Both the compounds form the same product on treatment with alcoholic KOH.

Both the compounds form the same product on treatment with aq.NaOH.

Both the compounds form the same product on reduction.

Both the compounds are optically active.

Ethylidene chloride

Ethylene dichloride

Methylene chloride

Benzyl chloride

(CH3)2 CHBr

(CH3)3C CH2Br

CH3CH(Br)CH2CH3

(CH3)2CBrCH2CH3