Question

What does ethylene glycol do to the solution in a vehicle’s radiator? It raises the boiling point and lowers the freezing point. It lowers the boiling point and lowers the freezing point. It lowers the boiling point and raises the freezing point. It raises the boiling point and raises the freezing point.

Answer 1

The correct option is A) It raises the boiling point and lowers the freezing point.

Step-by-step explanation:

Consider the provided information.

Ethylene glycol is often used for convective heat transfer.

The freezing point of pure ethylene glycol is about −12° C and boils at 198° C.

Due to the higher boiling point and antifreeze properties, it is used in a vehicle’s radiator.

Therefore, the correct option is A) It raises the boiling point and lowers the freezing point.

Answer 2

It raises the boiling point and lowers the freezing point.

Step-by-step explanation:

It is used as antifreeze in the cooling circuits of internal combustion engines, that is, it is used to reduce the melting point of the solution.

By adding ethylene glycol I'm not only bringing the melting point to -13°C, but the boiling point of ethylene glycol is 197°C.

since these substances not only lower the freezing point but also increase the boiling point, they are also called a colligative agent