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O-LevelChemistryAcids, Bases & Salts5070/11 · Oct/Nov 2013 · Q21 Mark

The results of two tests on a solution X are shown. reagent added | few drops | an excess aqueous sodium hydroxide | white precipitate | precipitate dissolves aqueous ammonia | white precipitate | precipitate remains Which ion is present in solution X?

Diagram for this question, from the exam paper

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AAl3+
BCa2+
CCu2+
DZn2+

✓ Correct answer

A: Al3+

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About this question

Topic
Acids, Bases & Salts, O-Level Chemistry (syllabus 5070). Multiple choice, 1 mark.
Source
O-Level Chemistry, Oct/Nov 2013 Paper 1 Variant 1, question 2.

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