Question

write si units of vanderwaal parameters

Answer 1

P = bar = 10^5 Pa
n = mol
R = 8.31 J/mol.K
V = m^3

For constant a
bar = a*(mol^2/m^6)
a = m^6*bar/mol^2 = bar(m^3/mol)^2 = L^2*bar/mol^2 --> (1)

For constant b
V - nb = m^3 - mol*b = m^3
b = m^3/mol = L/mol ---- > (4)

Answer 2

same as jahnvi answer.