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Exam-style practice

Rate of reaction answer explanations

Review worked answers and explanations for Rate of reaction. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 12

Review the answer support, then move sideways through the set.

Paper 3 structured question: Rate of reaction

Paper 3Theory (Core)2 marks

Description

Reaction of Hydrochloric Acid and Calcium Carbonate

When hydrochloric acid reacts with calcium carbonate, carbon dioxide gas is produced along with calcium chloride and water. The reaction can be affected by various factors such as concentration, temperature, and surface area of calcium carbonate.

  1. a

    Explain how increasing the concentration of hydrochloric acid affects the rate of reaction with calcium carbonate.

    [2]