# Ethylene Glycol & Freezing Point in Antifreeze

Chapter 7, Problem 7.87

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QUESTION:

Ethylene glycol is mixed with water and used as an antifreeze in automobile cooling systems. If a 50% (v/v) solution is made using pure ethylene glycol and pure water, it will have a freezing point of about $$-65^{\circ} \mathrm{C}$$. What will happen to the freezing point of the mixture if ethylene glycol is added until the concentration is 70% (v/v) ethylene glycol? Explain your answer.

QUESTION:

Ethylene glycol is mixed with water and used as an antifreeze in automobile cooling systems. If a 50% (v/v) solution is made using pure ethylene glycol and pure water, it will have a freezing point of about $$-65^{\circ} \mathrm{C}$$. What will happen to the freezing point of the mixture if ethylene glycol is added until the concentration is 70% (v/v) ethylene glycol? Explain your answer.

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Ethylene glycol acts as an antifreeze agent because it lowers the freezing point of water when mixed together. Pure water freezes at 0 degree celsius, but when ethylene glycol is added, it disrupts the ice crystals' formation and decreases the solution's freezing point.

##### Ethylene Glycol & Freezing Point in Antifreeze

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We explore the impact of increasing the concentration of ethylene glycol in an antifreeze mixture, explaining the resulting effect on the freezing point of the solution by examining its interaction with water molecules.