A solution of copper sulphate (CuSO4) is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of Cu = 63u) is :

Question

A solution of copper sulphate (CuSO4) is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of Cu = 63u) is : (A) 0.3892 g (B) 0.2938 g (C) 0.2398 g (D) 0.3928 g

Tardigrade Admin · Accepted Answer

W= Zit where Z = Electrochemical equivalent Eq. wt. of copper =(63/2)=31.5 Z=(31.5/96500) W=Zit=(31.5/96500) ×1.5×10×60=0.2938 g

Q. A solution of copper sulphate $(C u S O_{4})$ is electrolysed for 10 minutes with a current of $1.5$ amperes. The mass of copper deposited at the cathode (at. mass of $C u = 63 u$ ) is :

0.3892 g

0.2938 g

0.2398 g

0.3928 g

W= Zit
where Z = Electrochemical equivalent
Eq. wt. of copper = $\frac{63}{2} = 31.5$
$Z = \frac{31.5}{96500}$
$W = Z i t = \frac{31.5}{96500} \times 1.5 \times 10 \times 60 = 0.2938 g$

Q. A solution of copper sulphate (CuSO4​) is electrolysed for 10 minutes with a current of 1.5 amperes. The mass of copper deposited at the cathode (at. mass of Cu=63u) is :