Eugenol, a compound found in nutmeg and cloves, has the formula C10H12O2. What is the boiling point of a solution containing 0.144 g of this compound dissolved in 10.0 g of benzene?

Question

Molar mass of C10H12O2 = 164.2 g/mol kb of benzene= 2.53 °C/m
Soultion?

Answer 1

delta T = Kb*m
m = molality = mols/kg solvent
mols = grams/molar mass

mols = 0.144/164.2 = ?
m = ?mols/0.01 = ?
delta T = 2.53*m
Add delta T to the normal boiling point of benzene to find the new boiling point of benzene. You will need to look up the value for the boiling point of benzene. I seem to remember 80.2 degrees C but you should confirm that. I don't have all of the boiling points of thousands upon thousands of compounds memorized and I'm not even working on that project.