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3.3 Types of chemical reactions

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Question 46

A laboratory tests magnesium ribbon with equal volumes of hydrochloric acid and citric acid. Both acid solutions have a concentration of 0.50 mol/dm3. The magnesium fizzes more vigorously in the hydrochloric acid.

Explain why the magnesium fizzes more vigorously in the hydrochloric acid. Use ideas about ionisation.

[3]
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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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