Question -
If pressure of CO2 (real gas) in a container is given by P = RT2V−b−a4V2 then mass of the gas in container is
Options:
A .  11 gm
B .  22 gm
C .  33 gm
D .  44 gm
Answer: Option B : B Vander wal's gas equation for μ mole of real gas (P + μ2αV2)(V - μb) = μRT ⇒ P = μRTV−μb−μ2V2 on comparing the given equation with this standard equation we get μ=12. Hence μ = mM⇒ mass of gas m = μM = 12×44 = 22gm
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