Q.

Which cell will measure standard electrode potential of copper electrode?

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Pt(s)∣H2(g,0.1 bar )H+(aq⋅1M)Cu2+(aq,1M)∣Cu

Pt(s)∣H2(g,1 bar )H+(aq,1M)Cu2+(aq,2M)∣Cu

Pt⁡(s)∣H2(g,1 bar )H†(aq,1M)Cu2+(aq,1M)∣Cu

Pt⁡(s)∣H2(g,0.1 bar )H+(aq,0.1M)Cu2+(aq,1M)∣Cu

answer is C.

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Detailed Solution

Standard electrode potential of copper electrode can be calculated by constructing a concentration cell composed of two half-cell reactions in which concentration of species on left hand and right hand side are unity.In such case cell potential is equal to standard electrode potential.Pt(s)H2(g,1bar)∣H+(aq,1M)⏟Oxidation half -cell reaction Cu2+(aq,1M)Cu⏟Reduction half -cell reaction

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