. Current efficiency is defined as the extent of a desired electrochemical reaction divided

by the theoretical extent of the reaction times 100%. What is the current efficiency of an electrodeposition of Cu metal in which 9.8 g Cu is deposited by passage of 3A current for 10000 seconds.

A. 0.9%

B. 49.9%

C. 99.1%

D. 51.1%



Best Answer

Ans: C


If 0.311 mol electrons provided by the current 0.308 mol was used to deposit copper

The current efficiency is 0.308/0.311X 100= 99.1%


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