In which of the following electrochemical cell the overall cell reaction is: Zn(s)+H2SO4(aq)→ZnSO4(aq)+H2(g)

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Zn|H2SO4(aq)|H2(g)|Pt

Zn|ZnSO4(aq)|H2(g)|Pt

Zn|ZnSO4(aq)|H2SO4(aq)|H2(g)|Pt

Zn|ZnSO4(aq)||H2SO4(aq)|H2(g)|Pt

answer is D.

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Detailed Solution

For the cell: Zn|ZnSO4(aq)||H2SO4(aq)|H2(g)|PtLHE reaction: Zn→Zn2++2eRHE reaction: 2H++2e→H2Net reaction: Zn+2H+→Zn2++H2or Zn(s)+H2SO4(aq)→ZnSO4(aq)+H2(g)

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