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Acids and bases (A-level only)

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Question 30

At 318 K, the ionic product of water, KwK_{\text{w}}Kw​, is 4.0 × 10-14 mol2 dm-6.

What is the pH of a 0.035 mol dm-3 aqueous solution of barium hydroxide, Ba(OH)2\text{Ba(OH)}_2Ba(OH)2​, at this temperature?

A

11.9411.9411.94

B

12.2412.2412.24

C

12.5412.5412.54

D

12.8512.8512.85

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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