A Ni-plating bath is operated at a constant current of for

CHEMISTRY · Single correct · AP · Chemistry · Thermodynamics and Electrochemistry · Thermodynamics and Electrochemistry

Problem

A Ni-plating bath is operated at a constant current of

2.50\,\text{A}

for

1.50\,\text{h}

. At the end of the run,

2.30\,\text{g}

of Ni(s) has been deposited on the cathode. For the half-reaction

\text{Ni}^{2+} + 2 e^- \rightarrow \text{Ni}(s)

, what is the percent yield of nickel deposition? (Faraday constant:

F = 9.65 \times 10^{4}\,\text{C}\,\text{mol}^{-1}

; atomic mass of Ni =

58.69\,\text{g}\,\text{mol}^{-1}

) (a)

43\%

(b)

56\%

(c)

28\%

(d)

114\%