Chemistry 0620 · IGCSE · Electrolysis

Electrolysis — practice question

The quantities of gases P and Q produced when substance X undergoes electrolysis are shown below. What is substance X?

  • Aconcentrated aqueous sodium chloride
  • Bconcentrated hydrochloric acid
  • Cdilute sulfuric acid
  • Dmolten lead(II) bromide

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