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Acids and bases (A-level only)

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Question 12

Equal volumes of pairs of solutions of concentration 0.1 mol dm-3 are mixed.

Which pair forms a buffer solution?

A

propanoic acid and sodium propanoate

B

propanoic acid and hydrochloric acid

C

nitric acid and sodium nitrate

D

sodium hydroxide and potassium hydroxide

Markscheme

Acids and bases (A-level only) Questions

  1. A Level
  2. /Chemistry
  3. /Acids and bases (A-level only)

77 exam-style questions on AQA A Level Chemistry Acids and bases (A-level only), covering Brønsted–Lowry acid–base equilibria in aqueous solution (A-level only), Definition and determination of pH (A-level only), The ionic product of water, $K_w$ (A-level only), Weak acids and bases $K_a$ for weak acids (A-level only), pH curves, titrations and indicators (A-level only), and Buffer action (A-level only). Each one has a worked solution and a mark scheme showing where the marks go.

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