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4.2 Identifying the products of chemical reactions

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Question 21

A laboratory supplier is checking the metal ion in a batch labelled copper(II) sulfate solution. A technician adds a few drops of sodium hydroxide solution to a sample from the batch.

Which observation should the technician record if the solution contains copper(II) ions?

[1]
A

An orange-brown precipitate

B

A green precipitate

C

A blue precipitate

D

A green flame

Markscheme

4.2 Identifying the products of chemical reactions Questions

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

107 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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