Asked by Court

a solution containing 100g of unknown liquid and 900g water has a freezing point pf -3.33 C. given kf=1.86 degrees c for water, the moelcular weight of the unknown liquid is what?

Answers

Answered by DrBob222
delta T = Kf*molality
Solve for m

m = #moles/kg solvent
Substitute m and kg solvent, solve for # moles.

# moles = grams/molar mass
You have #moles and grams, solve for molar mass.
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