Electrolysis

Electrolysis Quiz

Spec 1.55C–60C · Edexcel IGCSE Chemistry: Quiz

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5 questions, one answer each

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  1. 1. Why do covalent compounds not conduct electricity?

    • A. They have no atoms
    • B. They have no free-moving ions or delocalised electrons
    • C. They are always gases
    • D. They have too many electrons

  2. 2. Which ions move towards the cathode during electrolysis?

    • A. Anions
    • B. Cations
    • C. Electrons only
    • D. Neutral atoms

  3. 3. In the electrolysis of molten lead(II) bromide using inert electrodes, what forms at the anode?

    • A. Lead metal
    • B. Bromine
    • C. Oxygen
    • D. Hydrogen

  4. 4. During electrolysis of aqueous copper(II) sulfate, what is produced at the cathode?

    • A. Hydrogen gas
    • B. Copper metal
    • C. Oxygen gas
    • D. Sulfur

  5. 5. A student electrolyses concentrated aqueous sodium chloride using inert electrodes. Which pair of products is correct, and how would you classify the cathode reaction?

    • A. Sodium metal and chlorine; cathode reaction is oxidation
    • B. Hydrogen and chlorine; cathode reaction is reduction
    • C. Hydrogen and oxygen; cathode reaction is oxidation
    • D. Sodium metal and oxygen; cathode reaction is reduction

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