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Qualitative analysis: tests for ions

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Question 41

Tests for three metal ions using sodium hydroxide solution are described.

Draw one straight line from each description of test to the correct observation that shows that ion to be present.

Each observation may be correct for one test, more than one test, or for none of the tests.

Description of test:

  • Test for aluminium ion (Al3+Al^{3+}Al3+): add a few drops of sodium hydroxide solution
  • Test for copper(II) ion (Cu2+Cu^{2+}Cu2+): add a few drops of sodium hydroxide solution
  • Test for magnesium ion (Mg2+Mg^{2+}Mg2+): add a few drops of sodium hydroxide solution

Observation:

  • blue precipitate
  • green precipitate
  • brown precipitate
  • white precipitate
[3]

Qualitative analysis: tests for ions Questions

  1. GCSE
  2. /Chemistry
  3. /Qualitative analysis: tests for ions

Practise Edexcel GCSE Chemistry Qualitative analysis: tests for ions with exam-style questions for Foundation and Higher tier. 127 questions, matched to the Edexcel GCSE Chemistry (1CH0) specification and written in Paper 1 and Paper 2 style. Every question includes a full worked solution and mark scheme, so you can see where marks are awarded rather than just whether you got the answer right.

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