CAIE IGCSE Chemistry 11.4 Alkanes Questions

Practise recognising alkane bonding, combustion products and chlorine substitution reactions under ultraviolet light.

Exam points

identify alkanes from formulae or names by single covalent bonding
state carbon dioxide and water as products of complete combustion
link chlorine substitution to ultraviolet light and replacement of H by Cl

Covered syllabus points

11.4.1—Bonding in alkanes is single covalent 11.4.2—Properties of alkanes as being 11.4.3—In a substitution reaction one atom or 11.4.4—Substitution reaction of alkanes with

[Maximum number: 1]

Which molecule contains only single covalent bonds?

propane

propanoic acid

propene

propyl propanoate

[Maximum number: 1]

Some properties of four fuels are shown.
Which fuel is a gas at room temperature and makes two products when it burns in a plentiful supply of air?

fuel

formula

melting point

$/^{\circ} \mathrm{C}$

boiling point

$/^{\circ} \mathrm{C}$

hydrogen

$\mathrm{H}_{2}$

-259

-253

methane

$\mathrm{CH}_{4}$

-182

-164

octane

$\mathrm{C}_{8} \mathrm{H}_{18}$

-57

126

wax

$\mathrm{C}_{31} \mathrm{H}_{64}$

400

[Maximum number: 1]

The equation for the reaction between butane, $\mathrm{C}_{4} \mathrm{H}_{10}$ , and chlorine is shown.

\mathrm{C}_{4} \mathrm{H}_{10}+\mathrm{Cl}_{2} \rightarrow \mathrm{C}_{4} \mathrm{H}_{9} \mathrm{Cl}+\mathrm{HCl}

Which type of reaction does butane undergo when it reacts with chlorine?

addition

reduction

acid-base

substitution

[Maximum number: 1]

Propane reacts with chlorine.
Which statements about this reaction are correct?

1 Ultraviolet light is used to provide the activation energy.
2 Propane undergoes an addition reaction.
3 One of the products is $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{Cl}$ .
4 One of the products is HCl .

1 and 2

1 and 4

2 and 3

3 and 4

All question bank results loaded

Covered syllabus points

Question 1

Question 2

Question 3

Question 4