1.

Standard hydrogen electrode has a following composition :

Answer»

PT ELECTRODE `[H^(+)] =1 M, p_(H_(2)) =1` bar
NI electrode, `[H^(+)] =0.1 M, p_(H_(2)) = 1` bar
Pt electrode, `[H^(+)] =1 M, p_(H_(2)) =10` bar
Ni electrode, `[H^(+)]=1 M, p_(H_(2)) = 10` bar

Answer :A


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