Question

The pressure of the gas was found to decrease from 720 to 480 mm. When 5g of sample of activated charcoal was kept in a flask of one litre capacity maintained at 27⁰C. If the density of charcoal at 1.25 gm/mL. The volume of gas adsorbed per gm of charcoal at 480 mm of Hg is

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

Answer 1

Answer: (C)

100.08 mL

Answer 2

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

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

Volume of gas adsorbe by per gram of charcoal = $\frac { 504 } { 5 }$= 100.08 ml