Question

The pressure of the gas was found to decrease from $720$ to $480mm$. When $5g$ of the sample of activated charcoal was kept in a flask of one litre capacity maintained at ${27}^{\circ }C$. If the density of charcoal at $1.25gm/mL$. The volume of gas adsorbed per gm of charcoal at $480mm$ of $Hg$ is:

• A. $80.03mL$
• B. $32.20mL$
• C. $100.08mL$
• D. None of these

Answer 1

The correct option is C $100.08mL$

$V_2=\frac{P_1{V}_1}{P_2}=\frac{720\times 1000}{480}=1500ml$

Volume of gas in the flask $=1000-$ volume of charcoal $=1000-\frac{5}{1.25}=996ml$

Total volume of gas adsorbe by charcoal $=1500-996=504ml$

Volume of gas adsorbed by per gram of charcoal $=\frac{504}{5}=100.8ml$