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

Mach 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)propT_(b)^(2))`
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