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Question

In the cell: Zn, Zn2+(aq) || H+(aq), H2(1 atm)Pt, during the working, the pH around cathode


A

Decreases

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B

Increases

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C

No change

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D

None of these

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Solution

The correct option is B

Increases


The reaction takes place at cathode is
H+(aq) + e 1/2 H2 ; since concentration of H+ ion decreases, pH will increase


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