Q.
Select the correct statements.
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a
A liquid always boils, when its vapour pressure becomes equal to 1 atm
b
Elevation in boiling point is shown by the difference of boiling point of solution and boiling point of pure solvent
c
Ebullioscopic constant has the units K kg mol-1
d
Kb is same for the solvent of salt solution and sugar solution
answer is B.
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Detailed Solution
A liquid boils when its vapour pressure becomes equal to atmospheric pressure.∆Tb=Tb-Tbo=Kbmwhere, ∆Tb= Elevation in B.P,Tb=B.P of solution,Tbo= B.P of pure solvent,Kb= Ebullioscopic constant.
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