Question

Relation between critical constant and vander waal constant

Answer 1

(dP/dV)ᴛ = 0 and (d²P/dV²)ᴛ = 0

Van der Waals equation for 1 mole gas is

(P + a/V²)(V - b) = RT

Answer 2

Tc= 8a / 27 Rb

Vc= 3b

Pc= a / 27 b^2