1.

If the various terms in the given below expressions have usual meanings, the van't Hoff factor (i) cannot be calculated byb which one of the expressions

Answer»

`pi V = sqrt("in")RT`
`Delta T_(f)=ik_(f).m`
`Delta T_(b)=ik_(b).m`
`(.^(@)P_("solvent")-P_("solution"))/(.^(@)P_("solvent"))=i((n)/(N+n))`

Solution :(a) Vant' Hoff equation is
`piV` = inRT
(b) For depression in FREEZING POINT.
`Delta T_(f)=ixx k_(f)xx m`
(c ) For elevation in boiling point.
`Delta T_(b)= ixx k_(b)xx m`
(d) For lowering of VAPOUR pressure,
`(P_("solvent")-P_("solution"))/(P_("solvent"))=i((n)/(N+n))`.


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