Skip to content

Course home

Question bank·3.3 Types of chemical reactions
Sign up

3.3 Types of chemical reactions

EasyMediumHard
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263
Question 23

Bromine reacts with iodide ions in solution.

Br2+2I−→2Br−+I2 \mathrm{Br_2 + 2I^- \rightarrow 2Br^- + I_2} Br2​+2I−→2Br−+I2​
a.

Explain, in terms of electrons, which reactant is oxidised and which reactant is reduced.

[2]
b.

Explain why electrons do not appear in the overall equation.

[2]
Markscheme

3.3 Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Types of chemical reactions

112 exam-style questions on OCR GCSE Chemistry 3.3 Types of chemical reactions, covering 3.3.1 Oxidation and reduction in terms of oxygen, 3.3.2 Acids, alkalis and neutralisation, 3.3.3 The pH scale and measuring pH, 3.3.4 Oxidation and reduction in terms of electrons, 3.3.5 Dilute and concentrated, weak and strong acids, and 3.3.6 Hydrogen ion concentration and pH. Each one has a worked solution and a mark scheme showing where the marks go.

More questions