Answer
In case of two-phase liquid–vapor mixture, for a given pressure, there is only one saturation temperature and vice-versa. Hence if we know any one from temperature and pressure we can find other one, Hence pressure and temperature are not independently variable for a two-phase liquid–vapor mixture.
Work Step by Step
In case of two-phase liquid–vapor mixture, for a given pressure, there is only one saturation temperature and vice-versa. Hence if we know any one from temperature and pressure we can find other one, Hence pressure and temperature are not independently variable for a two-phase liquid–vapor mixture.