Select the correct statement for the cell Pt(s)H2g, 1 bar H+aq, 1 MZn2+aq,1 MZnGiven, Zn2+/Zn=-0.76 V

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emf of the cell = + 0.76 V

Zn2+aq,1 M+2e-→Zns

hydrogen ion can reduce zinc

All of the above

answer is B.

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Detailed Solution

Ecello=EZn2+/Zn-EH2/2H+o=0.76-0=-0.76 VThus, hydrogen ions can only oxidise zinc and get reduced by them.

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