Question

What mass of sucrose, C12H22O11, should be added to 75.0 g H2O to raise the boiling point to 100.35 degrees C?

Molal boiling point of water:
0.512 Kb, degrees C m^-1

Answer: 18 g sucrose

Answer 1

delta T = Kb*m
Solve for m

m = mols/kg solvent\
Solve for mol

mols = grams/molar mass
Solve for grams.;