The pressure of a gas was found to decrease from 720 to 480 mm when 5 g 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 g - mL- the volume of the gas adsorbed per gram of charcoal at 480 mm Hg is-A- 100-08 mLB- None of theseC- 80-03 mLD- 32-20 mL

The correct option is A 100.08 mLWe know that, at constant temperature, V_2=P_1V_1P_2=720× 1000480=1500 mL Volume of gas in the flask =1000 51.25=996 mL Total ...

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Standard XII

Chemistry

Concentration Terms - An Introduction (w/w etc)

The pressure ...

Question

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

80.03 mL

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32.20 mL

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100.08 mL

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None of these

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Solution

The correct option is C $100.08 mL$
We know that, at constant temperature,
$V_{2} = \frac{P_{1} V_{1}}{P_{2}} = \frac{720 \times 1000}{480} = 1500 mL$
Volume of gas in the flask
$= 1000 - \frac{5}{1.25} = 996 mL$
Total volume of gas adsorbed by charcoal,
$= 1500 - 996 = 504 mL$
Volume of gas adsorbed per gram of charcoal $= \frac{504}{5} = 100.08 mL$

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The pressure of a gas was found to decrease from 720 to 480 mm when 5 g 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 g/mL, the volume of the gas adsorbed per gram of charcoal at 480 mm Hg is:

The correct option is C 100.08 mLWe know that, at constant temperature, V2=P1V1P2=720×1000480=1500 mL Volume of gas in the flask =1000−51.25=996 mL Total volume of gas adsorbed by charcoal, =1500−996=504 mL Volume of gas adsorbed per gram of charcoal =5045=100.08 mL

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