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4.2 Reactions of acids

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Question 3

Acid rain had made the water in a lake acidic, with a pH of 4. Powdered calcium carbonate was added to the lake, and the pH of the water rose to 6.

By what factor did the hydrogen ion concentration in the lake water decrease?

[1]
A

A factor of 100

B

A factor of 1000

C

A factor of 10

D

A factor of 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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