Chemistry 0620 · IGCSE · Electrolysis

Electrolysis — practice question

When Q is electrolysed with carbon electrodes, colourless gases form at both electrodes. What is Q?

  • Aconcentrated hydrochloric acid
  • Bconcentrated sodium chloride solution
  • Cdilute sulfuric acid
  • Dpure water

Worked solution & mark scheme

This 1-mark question has a full step-by-step worked solution and mark scheme.

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI