A solution of 22.0g of nonionic ascorbic acid in 100.0g of water freezes at –
2.33°C. What is the formula weight of the acid?
delta T = Kf*molality
Substitute and solve for m
m = mols/kg solvent
Substitute and solve for mols.
mols = grams/molar mass. You know grams and mols, solve for molar mass