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Q.

Which of the following is true for electro chemical cell made with SHE and Cu electrode:

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a

H2 is cathode & Cu is anode

b

H2 is anode and Cu is cathode

c

Reduction occurs at H2 electrode 

d

Oxidation occurs at Cu electrode

answer is B.

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Detailed Solution

Among the two electrodes that are connected to form a cell, the electrode with smaller reduction potential acts as anode and the electrode with greater reduction potential  acts as cathode
SHE has zero reduction potential and Cu has positive reduction potential (+0.34V), hence SHE acts as anode and Cu electrode acts as cathode

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Which of the following is true for electro chemical cell made with SHE and Cu electrode: