AIPMT | 2015Mole ConceptEasy
Question
The boiling point of 0.2 mol kg-1 solution of X in water is greater than equimolal solution of Y in water. Which one of the following statements is true in this case ?
Options
A.Molecular mass of X is greater than the molecular mass of Y.
B.Molecular mass of X is less than the molecular mass of Y.
C.Y is undergoing dissociation in water while X undergoes no change
D.X is undergoing dissociation is water
Solution
(ᐃTb)x > (ᐃTb)y
same solvent so, Kb is same m is same (given)
ix. kb. m > iy. kb . m ⇒ ix > iy
so, x is undergoing dissociation in water.
same solvent so, Kb is same m is same (given)
ix. kb. m > iy. kb . m ⇒ ix > iy
so, x is undergoing dissociation in water.
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