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2. Electrochemistry — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistry2. Electrochemistry1 Mark
MCQ
Three voltameters containing and aqueous solution of $H_2SO_4,$ $CuSO_4$ and $AgNO_3$ are connected in the following way

A current was passed for $10$ hours. $10.8\ g\ Ag$ was deposited at cathode in $(III)$ electrolytic cell during electrolysis if current efficiency is $50\%.$

What is magnitude of the current in ampere ?

  • A
    $1.56$
  • ✓
    $0.536$
  • C
    $0.760$
  • D
    $2.34$
✓

Answer

Correct option: B.
$0.536$
b
$w=\frac{E \times i \times t}{96500}$

$10.8=\frac{\left(\frac{108}{1}\right) \times\left(\frac{\mathrm{i}}{2}\right) \times(10 \times 3600)}{96500}$

$\mathrm{i}=0.536 \,\mathrm{amp}$

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