Question

Kf for water is 1.86 K kg mol. 1. If you automobile radiator holds 3.0 kg of water, how many grams

of ethylene glycol (C2H6O2) must you add to get the freezing point of the solution lowered to 2.8ºC?​

Answer 1

93 g

Here ΔTf=0−(−2.8oC)=2.8

∵ΔTf=KfM1×W2W

∴2.8=1.86×62×1W

⇒W=93.33≈93 g