A vapor is said to be saturated when?
-
a dynamic equilibrium exists between liquid molecules and the vapour molecules
- a dynamic equilibrium exists such that more molecules return to the liquid than are leaving it
- the temperature of the vapour varies
- the vapour pressure is atmospheric
The correct answer is: A
Explanation
A saturated vapour is one which is in dynamic equilibrium with its own liquid; that is as many go from the liquid to the vapour state every second return back to liquid.
There is an explanation video available .