Question: In a galvanic cell, if the anode reaction is Zn → Zn²⁺ + 2e⁻, what is the cathode reaction if the cathode is Cu²⁺ + 2e⁻ → Cu?
Options:
Cu → Cu²⁺ + 2e⁻
Zn²⁺ + 2e⁻ → Zn
Zn + Cu²⁺ → Zn²⁺ + Cu
Cu²⁺ + 2e⁻ → Cu
Correct Answer: Cu²⁺ + 2e⁻ → Cu
Solution:
The cathode reaction is Cu²⁺ + 2e⁻ → Cu.
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?
Cu → Cu²⁺ + 2e⁻
Zn²⁺ + 2e⁻ → Zn
Zn + Cu²⁺ → Zn²⁺ + Cu
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.
Galvanic Cell Reactions – Understanding the anode and cathode reactions in a galvanic cell, where oxidation occurs at the anode and reduction occurs at the cathode.
Oxidation and Reduction – Identifying oxidation (loss of electrons) and reduction (gain of electrons) processes in electrochemical reactions.
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