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Question

Which of the following statements about critical constants of gases are correct?

This question has multiple correct options

A

Larger $\frac{T _{c}}{P _{c}}$ the value of a gas, larger would be the excluded volume

B

Critical temperature $(T_{c})$ of gas is greater than its Boyle's temperature $(T_{b})$

C

At the critical point in the van der Waal's gas isotherm $(\frac{\partial P}{\partial V _{m}})_{T_{c}} = 0$

D

$V_{c} = 3 a$

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Updated on : 2022-09-05

Solution

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Correct options are A) and C)

Boyle's tempertaure of a gas is always higher than its critical temperature $(T_{c})$ . $T_{b} = \frac{a}{R _{b}}, T_{c} = \frac{8 a}{2 7 R _{b}}$
$V_{c} = 3 x b$

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