4. Ethylene glycol (C2H6O2) is used as an antifreeze in cars. If 400 g of ethylene glycol is added to 4.00 kg of water, what is the molality? Calculate how much the freezing point of water will be lowered. The freezing-point depression constant for water is Kf = –1.86°C/m. Show your work.

Question

4.	Ethylene glycol (C2H6O2) is used as an antifreeze in cars. If 400 g of ethylene glycol is added to 4.00 kg of water, what is the molality? Calculate how much the freezing point of water will be lowered. The freezing-point depression constant for water is Kf = –1.86°C/m. Show your work.

anonymous · Answer

molality: divide the mols of solute by the mass of the solvent. beware of solutes that dissociate, e.g. NaCl.

abb0t · Answer

molality is something over volume, usually moles

anonymous · Answer

i think i remember this exact question from gchem lab lol