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In a galvanic cell, if the anode reaction is Zn → Zn²⁺ + 2e⁻, what is the cathod

Practice Questions

Q1
In a galvanic cell, if the anode reaction is Zn → Zn²⁺ + 2e⁻, what is the cathode reaction if the cathode is Cu²⁺ + 2e⁻ → Cu?
  1. Cu → Cu²⁺ + 2e⁻
  2. Zn²⁺ + 2e⁻ → Zn
  3. Zn + Cu²⁺ → Zn²⁺ + Cu
  4. Cu²⁺ + 2e⁻ → Cu

Questions & Step-by-Step Solutions

In a galvanic cell, if the anode reaction is Zn → Zn²⁺ + 2e⁻, what is the cathode reaction if the cathode is Cu²⁺ + 2e⁻ → Cu?
  • Step 1: Identify the anode reaction, which is Zn → Zn²⁺ + 2e⁻. This means zinc is losing electrons.
  • Step 2: Understand that in a galvanic cell, the cathode is where reduction occurs, meaning a substance gains electrons.
  • Step 3: Look at the given cathode reaction, which is Cu²⁺ + 2e⁻ → Cu. This means copper ions are gaining electrons to form solid copper.
  • Step 4: Confirm that the cathode reaction is correctly stated as Cu²⁺ + 2e⁻ → Cu.
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