Question#1
The relative lowering of the vapour pressure is equal to the ratio between the number of [EAMCET 1991; CBSE PMT 1991]
The relative lowering of the vapour pressure of dilute solution is equal to the mole fraction of the solute molecule present in the solution
\( Relative \ lowering \ of \ vapour \ pressure = \frac{\Delta P}{p^o} = x_2 \)
\( x_2 = mole \ fraction \ of \ solute = \frac{moles \ of \ solute }{ moles \ of \ solution } \)
Question#2
When a substance is dissolved in a solvent the vapour pressure of the solvent is decreased. This results in [NCERT 1981]
\( V.pressure \propto \frac{1}{boiling \ point} \)
Question#3
Vapour pressure of a solution is [EAMCET 1988; MP PET 1994]
\( P \propto X_1 \)
Question#4
“The relative lowering of the vapour pressure is equal to the mole fraction of the solute.” This law is called [MP PET 1997, 2001]
Question#5
Lowest vapor Pressure is exerted by ETEA2006 Med