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4.2 Reactions of acids

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Question 4

The ions in a compound are X3+^{3+}3+ and Y2−^{2-}2−. A student proposes the formula XY3 _3\,3​ for the compound.

Evaluate the student's proposal and give the correct formula for the compound containing X3+^{3+}3+ and Y2−^{2-}2−. Then predict the formula of the compound if the charge on X changes to 2+ and the charge on Y stays the same.

[3]
Markscheme

4.2 Reactions of acids Questions

  1. GCSE
  2. /Chemistry
  3. /4.2 Reactions of acids

88 exam-style questions on AQA GCSE Chemistry 4.2 Reactions of acids, covering 4.2.1a Reactions of acids with metals, 4.2.1b Redox in acid-metal reactions, 4.2.2 Neutralisation of acids and salt production, 4.2.3 Soluble salts, 4.2.4 The pH scale and neutralisation, 4.2.5a Titrations, 4.2.5b Calculating quantities in titrations, and 4.2.6 Strong and weak acids. Each one has a worked solution and a mark scheme showing where the marks go.

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