# Calculate the equilibrium constants at 25°C for each of

Could someone work these out so I understand them.

calculate the equilibrium constants at 25°C for each of the following reactions.

1) 2 NO2 (g) <--------> N2O4 (g)

2) 3/2 H2 (g) + 1/4 P4 (g) <---------> PH3 (g)