
import numpy as np

# Constants
R = 8.3145 / 1000  # kJ K^-1 mol^-1
T = 298  # K

# Molar quantities
n_H2 = 3.0  # mol
n_N2 = 1.0  # mol

# Gibbs energy of mixing
delta_G_mix = -(n_H2 + n_N2) * R * T * np.log(2)

print(delta_G_mix)

