Ethylene Glycol Is Used in Automobile Radiators as an Antifreeze

question 18

Multiple Choice

Ethylene glycol is used in automobile radiators as an antifreeze. What will the freezing point of an antifreeze solution be if 2.5 L of ethylene glycol are mixed together with 2.5 L of water? The following information may be helpful to you. Ethylene glycol has a very low vapor pressure and is essentially nonvolatile. molar mass of ethylene glycol = 62.1 g/mol
Van't Hoff factor = 1
Density of ethylene glycol = 1.11 g/mL
Density of water = 1.00 g/mL
K_f for water = 1.86°C kg/mol

• A) -39°C
• B) -16°C
• C) -1.6°C
• D) -33°C
• E) -24°C

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