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4.2 Identifying the products of chemical reactions

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Question 25

A treatment plant receives two drums of metal salt solution. Drum P is labelled copper(II) nitrate and drum Q is labelled iron(II) nitrate. A chemist adds a few drops of sodium hydroxide solution to a sample from each drum. The sample from drum P forms a blue precipitate. The sample from drum Q forms an orange-brown precipitate as soon as the sodium hydroxide solution is added.

What is the correct conclusion about the drum labels?

[1]
A

Both drum labels are consistent with the test results.

B

Neither drum label is consistent with the test result.

C

Only the label on drum Q is consistent with the test result.

D

Only the label on drum P is consistent with the test result.

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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