# tc and pc of gas are 400k and 41 atm respectively then vc is

_{c}.

p

_{c}is the Critical pressure, V

_{c}is the critical molar volume

R= 0.082 L atm K

^{-1}mol

^{-1}

V

_{c}= 3b (from Ideal gas law)

and b = $\frac{{\mathrm{RT}}_{\mathrm{c}}}{8{\mathrm{p}}_{\mathrm{c}}}=\frac{0.082\mathrm{L}\mathrm{atm}{\mathrm{K}}^{-1}{\mathrm{mol}}^{-1}\times 400\mathrm{K}}{8\times 41\mathrm{atm}}=0.1{\mathrm{Lmol}}^{-1}$

V

_{c}= 3b = 0.3 Lmol

^{-1}

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