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Question

The oxidation and reduction half reactions of the reaction

2Al(s) + 3Cu2+(aq) → 2Al3+(aq) + 3Cu(s) are


A

Oxidation: Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: Cu2+(aq) + 2e- → Cu(s) ] x 2

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B

Oxidation: Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: 2Cu2+(aq) + 2e- → Cu(s) ] x 3

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C

Oxidation: 2Al(s) → Al3+(aq) + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3

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D

Oxidation: Al(s) → Al3+ + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3

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Solution

The correct option is D

Oxidation: Al(s) → Al3+ + 3e- ] x 2 Reduction: Cu2+ + 2e- → Cu(s) ] x 3


Oxidation: Al(s) → Al3+ + 3e- ] x 2

Reduction: Cu2+ + 2e- → Cu(s) ] x 3


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