vapour pressure of pure water is 40mm if a non volatile solute is added to it vapour pressure falls by - Chemistry - Basic Concepts in Chemistry

Question

vapour pressure of pure water is 40mm if a non volatile solute is
added to it vapour pressure falls by 4mm,hence molarity of solution
is

Shruti Srivastava · Accepted Answer

Dear â€‹Manideep
Varma,

Po-PsPo=mole fraction of solutePo=V P
 of solventPs=V P
 of solutionmole fraction of solute=440=0
1so mole fraction of solute+mole fraction of solvent=1mole of solute=0
1mole of solvent=0
9wt of water present in 0 9 mole=0
9×18=16 2 g or 0
0162 kgmolality=moles of solutewt
 of solvent in kg=0 10 0162=6
17molality of solution is 6 17

Regards

vapour pressure of pure water is 40mm.if a non volatile solute is added to it vapour pressure falls by 4mm,hence molarity of solution is