Saved Bookmarks
| 1. |
What is vapour pressure ? "In open vessel rate of vaporization is constant still equilibrium is not establish" - Explain. |
|
Answer» Solution :At definite temperature in CLOSE vessel, equilibrium is established between liquid and its vapour. At this TIME the pressure of vapour is called .vapour pressure of that liquid.. Equilibrium is possible in close vessel only and at equilibrium rate of vaporisation and condensation become same. At equilibrium rate of forward and reverse REACTION is also same. In open vessel - It is not possible to reach equilibrium in an open SYSTEM. In watch glass if water is PLACED in open atmosphere than the molecules of liquid vapour disperse in room. So rate of liquid `to`gas is more than rate of gas `to`liquid. So, equilibrium is not established. In this way in open vessel , `"liquid"_((l)) ne "liquid"_((g))`...(i) In open vessel also at constant temperature rate of vaporisation remain constant but equilibrium state is not attain. Condensation rate `lt` vaporisation, both two remain constant. |
|