Question

During the electrolysis of an aqueous solution of $HCOOK$, the number of gases obtained at cathode, anode, and a total number of gases are:

• A. $1,2,3$
• B. $1,2,2$
• C. $2,1,3$
• D. $2,1,2$

Answer 1

Answer: (B)

$1,2,2$

At cathode:
$H_{2}O+e^{-}\to \stackrel{\ominus }{O}H+\frac{1}{2}{H}_2\left(one\right)$
At anode:
$2HCO{O}^{\ominus }\to 2C{O}_2+H_2\left(two\right)$
$H_{2}andC{O}_2$ at anode and $H_2$ at cathode

With the total number of gases $2$