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Question

Two moles of electrons can do which of the following:
I. Reduce one mole of Ag+ to Ag
II. Reduce one mole of Cu2+ to Cu
III. Reduce 23 mole of Al3+ to Al

A
I,II, and III
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B
I and II only
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C
II and III only
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D
I only
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Solution

The correct option is D II and III only
Cu2++2eCu

1 mole of Cu2+ requires 2 moles of electrons to reduce to Cu

23Al3++2e23Al

23 moles of Al3+ requires 2 moles of electrons to reduce to Al.

Hence, option C is correct.

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