Which of these redox reactions is spontaneous as written? a. Ni + Zn2+ → Ni2+ + ZnB. Mg + Li+ → Mg2+ + LiC. Cu + Au3+ → Cu2+ + AuD. Zn + Ca2+ → Zn2+ + Ca?

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asked Jan 7, 2019 159k views

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Which of these redox reactions is spontaneous as written?

a. Ni + Zn2+ → Ni2+ + ZnB. Mg + Li+ → Mg2+ + LiC. Cu + Au3+ → Cu2+ + AuD. Zn + Ca2+ → Zn2+ + Ca?

Chemistry
high-school

Malek Ben El Ouafi asked

by Malek Ben El Ouafi

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D. Zn + Ca²⁺ → Zn²⁺ + Ca

Because Ca is more active metal (from the electrochemical series).

Nick Sharp answered Jan 11, 2019

by Nick Sharp

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