CAIE IGCSE Chemistry 11.4.4 Substitution Reaction of Alkanes with Questions

Work through real CAIE IGCSE Chemistry questions to explain UV activation, write chlorination equations and draw possible monosubstitution products.

Exam points

state that ultraviolet light provides activation energy for alkane chlorination
distinguish photochemical substitution from addition or catalytic reactions
write the monosubstitution equation alkane + chlorine -> chloroalkane + HCl
draw or name possible monosubstitution products and structural isomers for chlorinated alkanes

[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

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CAIE IGCSE Chemistry 11.4.4 Substitution Reaction of Alkanes with Questions question 1