Match the boiling point with K(b) for x,...

Match the boiling point with `K_(b)` for `x,y` and `z`, if molecular weight of `x,y` and `z` are same.
`{:(,b.pt,,k_(b),),(x,100,,0.68,),(y,27,,0.53,),(z,253,,0.98,):}`

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The correct Answer is:

`K_(b) (x) = 0.68, K_(b) (y) = 0.53, K_(b) (z) = 0.98`

`K_(b) prop T_(b)^(2)`

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