Question

Gold (atomic mass = 197) is plated from a solution of chlorauric acid, HAuCl4; it deposits on the cathode. Calculate the time it takes to deposit 0.64 g of gold, passing a current of 0.10 A. (1 faraday = 96,485 coulombs)
A) 54 min
B) 0.87 h
C) 0.29 h
D) 2.6 h
E) none of these

Answer

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