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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 0.367×10⁻⁶ kg/coulomb.

1. 21.3 mg
2. 24.3 mg
3. 13.6 mg
4. 17.6 mg

Correct answer: 24.3 mg

Solution

The current (I) is calculated using P = VI, giving I = P/V = 100/125 = 0.8 A. The charge (Q) in 1 minute is Q = I × t = 0.8 × 60 = 48 C. Using the formula m = ZQ, where Z is the E.C.E., m = 0.367×10⁻⁶ × 48 = 17.6 mg. Thus, the correct answer is D.

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