Vapour pressure ..
Chemistry
Level
1
A vessel contains 4 litre water whose vapour pressure is 6mm of Hg at 18deg C. What would be the vapour pressure in Hg unit if 2 litre more water is added into vessel at same temperature ?
The answer is 6.
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1 solution
Vapour pressure of a solution is defined as the pressure exerted by the vapours when liquid-vapour EQUILIBRIUM has already been achieved Hence as the equilibrium only depends on temperature And the T remains constant The vapour pressure remains the same