Question

An ethylene glycol solution contains 20.9 g of ethylene glycol (C2H6O2) in 85.0 mL of water. Compute the freezing point and boiling point of the solution. (Assume a density of 1.00 g/mL for water.)


freezing point
°C
boiling point
°C

How would I set this up?
thanks

Answer 1

moles ethylene clycol = grams/molar mass. Solve for mole.

molality = moles/kg solvent
Solve for molality

delta T = Kf*m and convert to freezing point.
delta T = Kb*m and add to 100 C to convert to boiling point.

Answer 2

Thanks