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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 :

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$100.61 mL$

$80.03 mL$

$100.08 mL$

$32.20 mL$

answer is C.

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Detailed Solution

$V_{2} = \frac{P_{1} V_{1}}{P_{2}} = \frac{720 \times 1000}{480} = 1500 ml$

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 adsorbed by per gram of charcoal $= \frac{504}{5} = 100.8 m l$

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