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Electrochemistry Feasibility of Redox Reactions

1

Choose the best answer

Given: Zn → Zn²⁺ + 2e⁻ E°ox = +0.76 V Cu → Cu²⁺ + 2e⁻ E°ox = −0.34 V The spontaneous reaction is:

Verified Answer & Explanation⌄

Correct Answer: B) Cu²⁺ + Zn → Cu + Zn²⁺

Concept Explanation

Zn is more readily oxidized, while Cu²⁺ is reduced, so the spontaneous reaction is Zn + Cu²⁺ → Zn²⁺ + Cu.

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Given: Zn → Zn²⁺ + 2e⁻ E°ox = +0.76 V Cu →... |… | ARMCQS