Question

What are the correct half reactions for the following reaction:

Zn + 2 HCl -> H 2 + ZnCl 2

Answer 1

D. Zn → Zn²⁺ + 2e⁻, 2H⁺ + 2e⁻ → H₂.

Step-by-step explanation:

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Answer 2

D. Zn → Zn²⁺ + 2e⁻, 2H⁺ + 2e⁻ → H₂.

Step-by-step explanation:

• It is a redox reaction that is consisted of two half-reactions:

Oxidation reaction:

Zn losses 2 electrons and is oxidized to Zn²⁺:

Zn → Zn²⁺ + 2e⁻.

Reduction reaction:

H⁺ gains 1 electron and is reduced to H:

2H⁺ + 2e⁻ → H₂.

So, the right choice is: D. Zn → Zn²⁺ + 2e⁻, 2H⁺ + 2e⁻ → H₂.