MHT CET Chemistry question

Which cell will measure standard electrode potential of copper electrode?

(A)\mathrm{Pt(s)\,|\,H_2(g,\,0.1\ bar)\,|\,H^+(aq,\,1M)\,||\,Cu^{2+}(aq,\,1M)\,|\,Cu}
(B)\mathrm{Pt(s)\,|\,H_2(g,\,1\ bar)\,|\,H^+(aq,\,1M)\,||\,Cu^{2+}(aq,\,2M)\,|\,Cu}
(C)\mathrm{Pt(s)\,|\,H_2(g,\,1\ bar)\,|\,H^+(aq,\,1M)\,||\,Cu^{2+}(aq,\,1M)\,|\,Cu}Correct
(D)\mathrm{Pt(s)\,|\,H_2(g,\,1\ bar)\,|\,H^+(aq,\,0.1M)\,||\,Cu^{2+}(aq,\,1M)\,|\,Cu}

Answer: (C)

Solution

The standard potential is measured against the standard hydrogen electrode (1 bar , 1 M ) with at 1 M;

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Question ID VK-066893