Why does an electrogravimetric determination of copper in an impure sample of copper oxide take so...
Homework Answers
Solution:
The process is carried out in an electrolytic cell, which consists of two electrodes an anode and a cathode with an external electrical energy supply. The impurity in copper oxide decreases the solubility, and therefore decreases the rate of reaction in electrolytic cell because precipitation usually occurs in a solution that is rich in dissolved solids. Therefore, process requires longer time in impure sample.
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