The boiling point depends on the concentration of the sugar solution.
Let us assume that we have dissolved 2000 g of sugar in 1 kg water.
The formula for boiling point elevation ΔTb is
i is Vant’s Hoff factor
Kb is the molal boiling point elevation constant
m is the molality of the solution
The molal concentration b of the solution must be calculated
Moles of sucrose=2000 sucrose × 1sucrose/ 342.30g sucrose = 5.843molsucrose
b=moles of solute / kilograms of solvent=5.483/1=5.483mol/kg
As the sugar is non electrolyte i is 1
Kb is 0.515°C.mo.kg−1
m is 5.483 mol/kg
Tb=Tb° + ΔTb=100+2.824=102.824°C
The Boiling point of sugar is 102.824 °C