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100mL CuSO(4) (aq) was electrolyzed usin...

`100mL CuSO_(4)` (aq) was electrolyzed using inert electrodes by passing `0.965A` till the pH of the resulting solution was 1. the soluton after electrolysis was neutralized treated with excess `KI` and titrated with `0.04M Na_(2)S_(2)O_(3)`. Volume of `Na_(2)S_(2)O_(3)` required was 35mL. Assuming no volume change during electrolysis calculate:
(a) during of electrolysis if current efficiency is `80%`
(b) initial concentration `(M)` of `CuSO_(4)`.

A

112.5mL

B

100mL

C

125mL

D

None of these

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A
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100mL CuSO_(4)(aq) was electrolyzed using inert electrodes by passing 0.965A till the pH of the resulting solution was 1. The solution after electrollysis was neutralized, treated with excess KI and titrated with 0.04M Na_(2)S_(2)O_(3) . Volume of Na_(2)S_(2)O_(3) required was 35mL . Assuming no volume change during electrolysis, calculate: (a) duration of electrolysis if current efficiency is 80% (b) initial concentration (M) of CuSO_(4) .

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