Current Electricity - Result Question 52

55. In producing chlorine through electrolysis, 100 watt power at $125 V$ is being consumed. How much chlorine per minute is liberated? E.C.E. of chlorine is $0.367 \times 10^{-6} kg /$ coulomb.

[2006]

(a) $21.3 mg$

(b) $24.3 mg$

(c) $13.6 mg$

(d) $17.6 mg$

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Answer:

Correct Answer: 55. (d)

Solution:

  1. (d) Power $=V \times I$

$I=\frac{\text{ Power }}{V}=\frac{100}{125}$

E.C.E. of chlorine is $0.367 \times 10^{-6} kg /$ coulomb

Charge passing in one minute $=\frac{100}{125} \times 60$ $=48$ coulomb

Chlorine precipitated $=0.367 \times 10^{-6} \times 48$

$ =17.6 \times 10^{-6} kg $

$ =17.6 mg $