Question

0.2964g of Cu was deposited on the passage of a current of 0.5 ampere for 30 minutes through a solution of copper sulphate. What is the electrochemical equivalent of Cu?

Answer 1

$$\begin{gathered} AccordingtoFaradayIlaw \\ W=ZIt \\ W=weightofthesubs\tan ce=0.2964g \\ Z=Electrochemicalequivalent=? \\ I=ampere=0.5 \\ t=30minutes=30\times 60=1800sec \\ 0.2964=Z\times 0.5\times 30\times 60 \\ Z=\frac{0.2964}{0.5\times 30\times 60}=3.2933\times {10}^{-4} \end{gathered}$$