1.

A 1.0 molal aqueous solution of tricloroacetic acid (C C_(3)COOH) is heated to its boiling point. The solution has the boiling point 0f 100^(@)C. Detrmine van't Goff factor for trichoroaccetic acid (K_(b) "for water "= 0.512 "KKg mol"^(-1)).

Answer»


SOLUTION :`DeltaT_("observed")=(100.18-100.0)=09.18^(@)C=0.18 K`
`DeltaT_("calculated")=K_(b)xxm=(0.512" K KG MOL"^(-1))xx(0.1" mol kg"^(-1))=0.512 K`
`(DeltaT_("observed"))/(DeltaT_("calculated"))=((0.18K))/((0.512 K))=0.351.`


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