Question

Identify the gas which is readily adsorbed by activated charcoal.

• A. $N_2$
• B. $S{O}_2$
• C. $H_2$
• D. $O_2$

Answer 1

Answer: (B)

$S{O}_2$

In general, more easily liquefiable gases are readily adsorbed as vander waal's forces are stronger near the critical temperatures. Thus 1 g of activated charcoal adsorbs 380 ml of sulphur dioxide, 16 ml of methane and 4.5 ml of hydrogen. Hence $S{O}_2$ is adsorbed more readily by activated charcoal.