Ethylene glycol is mixed with water and added to an automobile's radiator. Which of the following occurs?
I. The freezing temperature of the mixture rises.
II. The vapor pressure inside the radiator increases.
III. The boiling temperature of the mixture rises.

Question

Quizplus · Accepted Answer

III. When ethylene glycol is mixed with water, it acts as an antifreeze, lowering the freezing point of the mixture and raising its boiling point. This helps prevent the engine coolant from freezing in cold temperatures and from boiling over in hot temperatures. The vapor pressure inside the radiator does not necessarily increase; it depends on the temperature and the specific mixture ratio.

Ethylene Glycol Is Mixed with Water and Added to an Automobile's