At XXXXXXXXXXK, liquid and vapor phases of ammonia coexist in a state of equilibrium and exert a pressure of 1.95 MPa. Determine the molar volume of ammonia vapour and ammonia liquid at these...

At 321.55 K, liquid and vapor phases of ammonia coexist in a state of equilibrium and exert a pressure of 1.95 MPa. Determine the molar volume of ammonia vapour and ammonia liquid at these conditions, assuming that NH3 follows the van der Walls equation of state. Use iterative schemes to determine the molar volumes.