Question

When same quantity of electricity is passed for the amount of $Cu$ and $Cr$ deposited are respectively $0.375\, g$ and $0.30\, g$. Ratio of electrochemical equivalents of $Cu$ and $Cr$ is

• A. $0.8$
• B. $1.25$
• C. $2.5$
• D. $1.62$

Answer 1

Answer: (B)

$1.25$

Answer 2

$\frac{w_1}{w_2} = \frac{E_1}{E_2} = \frac{Z_1}{Z_2} \Rightarrow \frac{0.375}{0.3} = \frac{Z_1}{Z_2} = 1.25$