Question

When IF of electricity is passed through acidulated water, $O_2$ evolved is:

• A. $11.2d{m}^3$
• B. $5.6d{m}^3$
• C. $22.4d{m}^3$
• D. $1.0d{m}^3$

Answer 1

Answer: (B)

Mass of $O_2=\frac{E}{F}\times Q=\frac{8}{F}\times F=8g$
Volume of $8g$ of $O_2$ at NTP
$=\frac{22.4\times 8}{32}d{m}^3$
$=5.6d{m}^3$