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4.2 Reactions of acids

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Question 7

A titration uses 30.0 cm3 of potassium hydroxide solution. A volume of 22.5 cm3 of 0.160 mol/dm3 nitric acid exactly neutralises the potassium hydroxide.

KOH+HNO3→KNO3+H2O\text{KOH} + \text{HNO}_3 \rightarrow \text{KNO}_3 + \text{H}_2\text{O}KOH+HNO3​→KNO3​+H2​O

Which value is the concentration of the potassium hydroxide solution?

[1]
A

0.213 mol/dm30.213\ \text{mol/dm}^30.213 mol/dm3

B

0.120 mol/dm30.120\ \text{mol/dm}^30.120 mol/dm3

C

0.240 mol/dm30.240\ \text{mol/dm}^30.240 mol/dm3

D

0.160 mol/dm30.160\ \text{mol/dm}^30.160 mol/dm3

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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