How many coulombs are needed to deposit 1 mole of Cu from CuSO₄ (Cu²⁺ + 2e⁻ → Cu)?
A48250 C
B2 × 96500 = 193000 C
C0
D96500 C
Answer & Solution
Correct answer: B. 2 × 96500 = 193000 C
Cu²⁺ + 2e⁻ → Cu requires 2 moles of electrons = 2F = 193000 C per mole of Cu. Faraday's law in action.
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