Asked by Shines
When 0.354 g of an unknown nonelectrolyte compound was dissolved in 12.5 g of benzene a solution was formed that froze at 4.46 degrees C. Calculate the molar mass of the unknown compound. The freezing point of benzene if 5.48 degrees C, and the Kf of benzene is 5.12 degrees C/Molal
Answers
Answered by
DrBob222
delta T = Kf*m
Substitute and solve for m.
m = mols kg solvent
substitute and solve for mols
mols = grams/molar mass
Substitute and solve for molar mass
Substitute and solve for m.
m = mols kg solvent
substitute and solve for mols
mols = grams/molar mass
Substitute and solve for molar mass
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