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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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Higher boiling point of a liquid means greater polarity and greater the polarity, higher is the value for `K_(b)`. Hence, the correctly mathced values will be
`{:("Solvent","Boiling point","K"_(b)),(X,100^(@)C,0.68),(Y,27^(@)C,0.53),(Z,253^(@)C,0.98):}`
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