35. electrolysis of aq. CuSO4 produces (1) an increase in pH (2) a decrease in pH (3) either decrease or increase (4) none

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Q. An aqueous solution of

C u S O_{4}

is subjected to electrolysis using inert electrodes. The pH of the solution will:

Q. In the dissociation of

N H_{4} O H

N H_{4} O H (a q) ⇌ N H_{4}^{+} (a q) + O H^{-} (a q)

N H_{4} C l

is added to it, how will the

p H

for the

N H_{4} O H

solution change?

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Electrolysis is carried out in three cells : (A) - 1.0 $M C u S O_{4},$ Pt electrodes; (B) - 1.0 $M C u S O_{4},$ , Copper electrode; (C) - 1.0 $M K C l$ , Pt electrodes. If the volume of electrolytic solution is maintained constant in each of the cells, which is correct set of pH changes in (A), (B) and (C) cells respectively?

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