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6.2 Organic chemistry

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Question 11
F

Most of the compounds in crude oil fractions are alkanes. The alkanes have the general formula CnH2n+2\mathrm{C_{n}H_{2n+2}}Cn​H2n+2​.

An alkane molecule contains 22 hydrogen atoms.

How many carbon atoms does it contain?

[1]
A

10

B

11

C

12

D

20

Markscheme

6.2 Organic chemistry Questions

  1. GCSE
  2. /Chemistry
  3. /6.2 Organic chemistry

131 exam-style questions on OCR GCSE Chemistry 6.2 Organic chemistry, covering 6.2.1 Crude oil and fractional distillation, 6.2.2 Cracking and dependence on hydrocarbons, 6.2.3 Functional groups and homologous series, 6.2.4 Reactions of alkanes, alkenes and alcohols, 6.2.5 Addition polymerisation and repeat units, 6.2.6 Naturally occurring polymers, 6.2.7 Chemical cells and fuel cells, and 6.2.8 Condensation polymerisation and how to make one. Each one has a worked solution and a mark scheme showing where the marks go.

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