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Exam-style practice

Electrolysis answer explanations

Review worked answers and explanations for Electrolysis. Aligned to Cambridge IGCSE Combined Science.

Answer explanations

Question 1 of 10

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

Paper 3 structured question: Electrolysis

Paper 3Theory (Core)3 marks

Description

Electrolysis of Sodium Chloride Solution

When sodium chloride (NaCl) is dissolved in water, it dissociates into sodium ions (Na+) and chloride ions (Cl-). When an electric current is passed through the solution, electrolysis occurs.

  1. a

    Explain the process of electrolysis that occurs when sodium chloride solution is electrolyzed.

    [3]