A rigid vessel contains water at 015 MPa The vessel is heate

A rigid vessel contains water at 0.15 MPa. The vessel is heated to the critical point of water. Calculate the fraction of mass of liquid in tube at the critical point.

Solution

Given:-

Pressure of water = 0.15MPa = 1.5 bar

At critical point of water ,temparature = 647K=374C

From the ideal gas equation

PV= mRT

assume volume = 1m³

1.5 x 10⁵ x 1 = m x 287 x 647

m= 0.8078 kg-------------Ans