1.

A solution prepared by dissolving 1.25 g of oil of winter green (methyl s.ilicylate) in 99.0 g of benzene has a boiling po . int of 80.31^(@) C , Determine the molar mass of this compound. (B.P. of pure benzene = 80.10^(@)C and K_(b) for benzene=2.53^(@) C " Kg " mol^(-1) )

Answer»

Solution :`Delta T_(B) = (80.31 = 80.10)^(@)` C
= `0.21^(@) C or 0.21` K
`Delta T_(b) = K_(b)` m
`0.21^(@) C = 2.53^(@)`CKG `MOL^(-1) XX (1.25 g)/(M) xx (1000)/(99 kg)`
M = 152 g `mol^(-1)`
Where M is molar mass of the SOLUTE.


Discussion

No Comment Found

Related InterviewSolutions