Question

the plots of gaseous densities versus temperature and of liquid densities versus temperature for a substance Converge at a temperature, the temperature is called?

Answer 1

The point at which the two graphs converge is known as:

THE CRITICAL TEMPERATURE.

At this point the density of the gaseous density is equal to the liquid density.

As the liquid gets heated more liquid turns to vapour increasing the density of the vapour and the liquid becomes less dense.

This happens until that point when the gaseous density equals liquid density.

The temperature at which this occurs is what is known as critical temperature.