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 ma

Monjur Alahi

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 `27^(@)C`. If the density of charcoal is `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


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Salim Ahmed Kawsar

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Correct Answer - C
`V_(2)=(P_(1)V_(1))/(P_(2))=(720xx1000)/(480)=1500 ml`
Volume of gas in the flask `=1000- "volume of charcoal"=1000-5/1.25=996 ml`
Total volume of gas adsorbe by charcoal `=1500-996=504 ml`
Volume of gas adsorbe by per gram of charcoal `=504/5=100.08 ml`

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