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Acids and bases (A-level only)

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Question 10

Which indicator should be used in a titration to find the concentration of a solution of ethanoic acid using 0.10 mol dm-3 sodium hydroxide?

A

Methyl yellow (pH range 2.9–4.0)

B

Methyl red (pH range 4.4–6.2)

C

Bromothymol blue (pH range 6.0–7.6)

D

Phenolphthalein (pH range 8.3–10.0)

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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