Explain how much in kilograms ethylene glycol antifreeze C2H6O2 has to be added to 14.4 kg of water to get a mixture that freezes at -15.5oC. For water Kf = 1.86oC kg/mol.
While 4.44 g of para-dibromobenzene (C6H4Br2) was dissolved in 20.20g of benzene the mixture froze at -2.22oC. The freezing point of pure benzene is 5.40oC. Compute the Kf for benzene.