A solution of CuSO4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode?

Question

A solution of CuSO4 is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode? (A) 3.5 g (B) 0.296 g (C) 5.75 g (D) 10 g

Tardigrade Admin · Accepted Answer

W = (I t E/96500) where I = 1.5 A t = 10 × 60 = 600 s E = (63.5/2) = 31.75 ∴ W = (1.5 × 600 × 31.75/96500) = 0.296 g

Q. A solution of $C u S O_{4}$ is electrolysed for $10$ minutes with a current of $1.5$ amperes. What is the mass of copper deposited at the cathode?

$3.5 g$

$0.296 g$

$5.75 g$

$10 g$

$W = \frac{I t E}{96500}$
where $I = 1.5 A$
$t = 10 \times 60 = 600 s$
$E = \frac{63.5}{2} = 31.75$
$∴ W = \frac{1.5 \times 600 \times 31.75}{96500}$
$= 0.296 g$

Q. A solution of CuSO4​ is electrolysed for 10 minutes with a current of 1.5 amperes. What is the mass of copper deposited at the cathode?

3.5g

0.296g

5.75g

10g