NEET Chemistry Electrolytic Cells MCQ Question
How much charge in coulombs is required to deposit 2 moles of copper from a copper(II) sulfate solution in an electrolytic cell?
192,970 C
96,485 C
48,242.5 C
385,940 C
Correct Answer
Detailed Explanation
The reaction Cu²⁺ + 2e⁻ → Cu(s) requires 2 moles of electrons per mole of Cu²⁺ reduced. Therefore, depositing 2 moles of copper requires 4 moles of electrons. Since 1 mole of electrons carries a charge of 96,485 C, the total charge required is 4 * 96,485 C = 385,940 C.
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