STANDARD Chemistry Electrolysis MCQ Question
How much metal will be deposited when a current of 12 ampere with 75% efficiency is passed through the cell for 3 h? (Given: z = 4 × 10⁻⁴)
32.4 g
38.8 g
36.0 g
22.4 g
Correct Answer
Detailed Explanation
The mass of metal deposited is calculated using the formula W = Z × I × t × efficiency. Substituting the given values, W = 4 × 10⁻⁴ × 12 × 3 × 3600 × 0.75 = 38.8 g.
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