Question

From the following half – cell reactions and their potentials, what is the smallest possible

standard e.m.f for spontaneous reactions?

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3– – 2 – o

4 2 3

– – o

2 2

– – – – o

3 2

PO aq + 2H O l + 2e HPO + 3OH aq ; E = –1.05V

PbO s + H O l + 2e PbO s + 2OH aq ; E = +0.28V

IO aq + 2H O l + 4e IO aq + 4OH aq ; E = +0.56V

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(a) + 0.00

(b) + 0.74

(c) + 0.56

(d) + 0. 28
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Answer 1

please rewrite the question once again

I am unable to understand