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4.2 Identifying the products of chemical reactions

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Question 4
F

A student electrolyses copper(II) sulfate solution using inert electrodes.

Which observations are correct?

[1]
A

A gas forms at the cathode that gives a squeaky pop with a lit splint, and a gas forms at the anode that relights a glowing splint.

B

A pink-brown solid forms on the cathode, and a gas forms at the anode that relights a glowing splint.

C

A pink-brown solid forms on the cathode, and a gas forms at the anode that bleaches damp blue litmus paper.

D

A gas forms at the cathode that gives a squeaky pop with a lit splint, and no gas forms at the anode.

Markscheme

4.2 Identifying the products of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Identifying the products of chemical reactions

52 exam-style questions on OCR GCSE Chemistry 4.2 Identifying the products of chemical reactions, covering 4.2.1 Tests to identify gases, 4.2.2 Tests for aqueous ions and flame tests, and 4.2.3 Instrumental methods of analysis. Each one has a worked solution and a mark scheme showing where the marks go.

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