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ALKYL HALIDES

Total questions: 10

Worksheet time: 5mins

Name
Class
Date
1.

For which of the following transformations does the reactive carbon undergo a change in hybridization?

a)

methane to chloromethane

b)

methanol to methanal

c)

methanal to methanoic acid

d)

chloromethane to methanol

2.

Which molecule does not act as a nucleophile in a reaction with a halogenoalkane?

a)

Water

b)

Ethanol

c)

Hydroxide ion

d)

Ammonium ion

3.

Which compounds reacts fastest with water?

a)

(CH3)3CBr

b)

(CH3)3CCl

c)

CH3CH2CH2CH2Br

d)

CH3CH2CH2CH2Cl

4.

The reaction between 2-chloro-2-methylpropane, (CH3)3CCl, and aqueous sodium hydroxide is an example of

a)

Unimolecular nucleophilic addition

b)

Bimolecular nucleophilic addition

c)

Unimolecular nucleophilic substitution

d)

Bimolecular nucleophilic substitution

5.

Which statement about the reactions of halogenoalkanes with aqueous sodium hydroxide is correct?

a)

Primary halogenoalkanes react mainly by SN1 mechanism.

b)

Chloroalkanes react faster than iodoalkanes.

c)

Tertiary halogenoalkanes react faster than primary halogenoalkanes.

d)

The rate of an SN1 reaction depends on the concentration of aqueous hydroxide.

6.

Which one of the following carbonium ions (carbocations) is most stable?

a)
b)
c)
d)
7.

Which is correct about the order and rate of hydrolysis (relative to 1-iodobutane) for 2-iodo-2-methylpropane, (CH3)3Cl?

a)

A

b)

B

c)

C

d)

D

8.

Which of the chloroalkanes below will hydrolyse most rapidly?


a)

CH3CH2CH2CH2Cl

b)

CH3CH(CH3)CH2Cl

c)

CH3CH2CHClCH3

d)

(CH3)2CClCH2Cl

9.

Which substance(s) is(are) most likely to react with hydroxide ions by means of a SN2 mechanism?

I. C6H5Cl

II. (CH3)3CCl

III. (CH3)2CHCH2Cl

IV. CH3CH2CH2CH2Cl

a)

I and III

b)

I and IV

c)

III and IV

d)

I, III and IV

10.

Which statement is incorrect regarding the reaction of ammonia with alkyl halides?

a)

This is a Lewis acid base reaction

b)

Ammonia acts as a nucleophile and forms dative bond with the carbon

c)

The product of the reaction is an amine

d)

The hybridisation of the carbon atom that receives the ammonia molecule changes from sp3 to sp2