Knowing the Van der Waals constant, find :
(a) the maximum volume which water of mass `m = 1.00 kg` can occupy in liquid state ,
(b) the maximum pressure of the saturated water vapour.

Explanation

(a) The ciritical Volume `V_(MCr)` is the maximum volume in the liquid phase and the minimum volume in the gaseous. Thus
`V_(max) = (1000)/(18) xx 3 xx .030 litre ~~ 5 litre`
(b) The critical pressure is the maximum possible pressure in the vapour phase in equilibrium with liquid phase. Thus
`p_(max) = (a)/(27 b^2) = (5.47)/(27 xx .03 xx .03) = 225 atmosphere`.