Gold (Atomic Weight = 197)is Plated from a Solution of Chlorauric

question 24

Multiple Choice

Gold (atomic weight = 197) is plated from a solution of chlorauric acid,HAuCl₄; it deposits on the cathode.Calculate the time it takes to deposit 0.77 g of gold,passing a current of 0.10 A.(1 faraday = 96,485 coulombs)

• A)65 min
• B)1.05 h
• C)0.35 h
• D)3.1 h
• E)none of these

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