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A 1 litre vessel having 20 g charcoal (d...

A 1 litre vessel having 20 g charcoal (density `2.0 g/cm^3` ) was filled with a gas at 300K. The pressure of the gas was 760 torr. Due to adsorption, the pressure of gas falls to 608 torr. What is the no. of gas molecules adsorbed perg of charcoal?

A

`2.4 xx 10^(21)`

B

`2.4 xx 10^(20)`

C

` 2.4 xx 10^(22)`

D

`2.4 xx 10^(23)`

Text Solution

Verified by Experts

The correct Answer is:
B
Volume occupied by charcoal =`(20)/(2.0)=10 cm^(3)`
Moles of gas adsorbed =`((760-608 )xx990)/(760 xx1000xx0.0821 xx300)=8.04xx10^(-3)` mole
`therefore` Molecules of gas adsorbed per g =`(4.8 xx10^(21))/(20)=2.4 xx10^(20)`
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