STANDARD Chemistry Electrolysis MCQ Question
How long would it take to deposit 50 g of Al from an electrolytic cell containing Al₂O₃ using a current of 105 ampere?
1.54 h
1.42 h
1.32 h
2.15 h
Correct Answer
Detailed Explanation
The equivalent weight of Al is 9. Using the formula t = (W × 96500) / (Eq. wt. × I), we find t = (50 × 96500) / (9 × 105) = 1.42 h.
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