Skip to content

Course home

Sign up

6.2 Organic chemistry

EasyMediumHard
1234567891011121314151617181920212223242526272829303132333435363738394041
Question 3

During quality control, a technician tests an unknown hydrocarbon, R.

Bromine water changes from orange to colourless when shaken with R.

R reacts completely with bromine. The relative formula mass of the bromine-containing product is 271.8.

Relative atomic masses (Ar): C = 12.0 H = 1.0 Br = 79.9

a.

Identify the homologous series of R and deduce its molecular formula.

[4]
b.

Predict the molecular formula of the product when R reacts with steam.

Explain why R can take part in this reaction.

[2]
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.

Question bank