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3.4 Electrolysis

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Question 17

A technician wants to collect oxygen at the positive electrode during electrolysis using inert platinum electrodes.

The available aqueous solutions are magnesium nitrate, zinc bromide, potassium iodide and sodium chloride.

What solution should the technician use?

[1]
A

Potassium iodide solution

B

Zinc bromide solution

C

Magnesium nitrate solution

D

Sodium chloride solution

Markscheme

3.4 Electrolysis Questions

  1. GCSE
  2. /Chemistry
  3. /3.4 Electrolysis

98 exam-style questions on OCR GCSE Chemistry 3.4 Electrolysis, covering 3.4.1 Products formed at the electrodes in electrolysis and 3.4.2 The technique of electrolysis. Each one has a worked solution and a mark scheme showing where the marks go.

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