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3.3 Types of chemical reactions

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Question 5

Lemon juice has a pH of 2 and tomato juice has a pH of 4.

a.

Calculate the difference between the pH values of the two juices.

[1]
b.

Calculate the ratio of the hydrogen ion concentrations in lemon juice to tomato juice.

[1]
Markscheme

3.3 Types of chemical reactions Questions

  1. GCSE
  2. /Chemistry
  3. /3.3 Types of chemical reactions

112 exam-style questions on OCR GCSE Chemistry 3.3 Types of chemical reactions, covering 3.3.1 Oxidation and reduction in terms of oxygen, 3.3.2 Acids, alkalis and neutralisation, 3.3.3 The pH scale and measuring pH, 3.3.4 Oxidation and reduction in terms of electrons, 3.3.5 Dilute and concentrated, weak and strong acids, and 3.3.6 Hydrogen ion concentration and pH. Each one has a worked solution and a mark scheme showing where the marks go.

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