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10.2 Hydrocarbons

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Question 14
H

1.40 g of an alkene reacts exactly with 4.00 g of bromine, Br2\mathrm{Br_{2}}Br2​. Each alkene molecule has one C=C bond.

What is the molecular formula of the alkene?

(relative atomic masses: Br = 80, C = 12, H = 1)

[1]
A

C2H4\mathrm{C_{2}H_{4}}C2​H4​

B

C4H8\mathrm{C_{4}H_{8}}C4​H8​

C

C4H10\mathrm{C_{4}H_{10}}C4​H10​

D

C8H16\mathrm{C_{8}H_{16}}C8​H16​

Markscheme

10.2 Hydrocarbons Questions

  1. GCSE
  2. /Chemistry
  3. /10.2 Hydrocarbons

36 exam-style questions on Edexcel GCSE Chemistry 10.2 Hydrocarbons, covering 10.2.1 Formulae and structures of the alkanes, 10.2.2 Alkenes and the C=C functional group, 10.2.3 Addition reactions of alkenes and testing for unsaturation, and 10.2.4 Combustion of alkanes and alkenes. Each one has a worked solution and a mark scheme showing where the marks go.

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