Question

Calculate the critical constants of a gas whose vander Waals' constants are
$a=0.715L^2$ $atm$ ${mol}^{-2}$ and $b=0.0226L$ ${mol}^{-1}$

Answer 1

The critical constants of gas which consists of critical temperature, critical pressure, and critical density;

Here,

$a=0.715L^{2}atmmo{l}^{-2}$ and $b=0.0226Lmo{l}^{-1}$

$Vc=3b=3\times 0.0226$$=0.0675L$

$Pc=\frac{a}{27b^2}$=$\frac{0.751}{27\times (0.0225{)}^2}$ $=54.94atm$

=54.94 atm