The molal boiling point constant for water is`0.513^(@)C kgmol^(-1)`. When `0.1`mole of sugar is dissolved in `200`ml of water , the solution boils under a pressure of one atmosphere at

Explanation

`Delta T_(b)=K_(b)xx(w)/(mw)xx(1000)/(w)=k_(b)(n xx 1000)/(W)`
`Delta T_(b)=0.513xx0.1xx(1000)/(200)=0.256`
`T_(S)-T_(0)=0.256`
`T_(S)=T_(0)+0.256`
`T_(S)=100+0.256=100.256=100.256.^(@)C`