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4.2 Reactions of acids

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Question 26

Two different acids, P and Q, are each dissolved in water to make solutions with the same concentration. The pH of each solution is shown in the table.

AcidpH of solution
P2
Q4
a.

Calculate the factor by which the hydrogen ion concentration in the solution of acid P is greater than in the solution of acid Q.

[1]
b.

Explain which acid, P or Q, is the stronger acid.

[2]
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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