Question

Which solution has the lower freezing point? 10g of methanol (CH₃OH) in 100g of water (or) 20g of ethanol (C₂H₅HO) In 200g of water.

Answer 1

∆T_f = K_f . m 

i.e. ∆T_f ∝ m

∴ Depression in freezing point is more in methanol solution and it will have lower freezing point.