Boiling point of water at 750 mm Hg is 99.63^(@)C. How much sucrose is to be added to 500 gor water such that it boils at 100^(@) C ?

Boiling point of water at 750 mm Hg is 99.63^(@)C. How much sucrose is

1.	Boiling point of water at 750 mm Hg is 99.63^(@)C. How much sucrose is to be added to 500 gor water such that it boils at 100^(@) C ?
Answer» Solution :Elevation in boiling point required,` Delta T _(b) = 100- 99.63^(@)=0.37^(@)` Mass of solvent (water)` W_(1)=500g` Mass of SOULTE, `C_(12) H _(22) O _(11) =342 g mol^(-1)` Molar mass of solvent `M _(1) = 18 g mol^(-1)` APPLYING the formula, `M _(2) = (1000 K _(b) W_(2))/(W_(1) XX Delta T_(b))` `W _(2) = (M_(2) xx Delta T_(b) xx W_(1))/(1000 xx K _(1))` `= ( 342 mol ^(-1) xx 0.37k xx 500 g )/( 1000 xx 0.52 kg mol ^(-1))= 121. 67g`