Ethylene Glycol Is Used in Automobile Radiators as an Antifreeze

question 14

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

---

Definitions:

Epidermis

The outermost layer of skin, serving as a protective barrier against environmental elements.

Dermis

The layer of skin beneath the epidermis that contains nerve endings, sweat glands, and blood vessels.

Dilation

The process of expansion or widening in size, often referring to the opening of the cervix during childbirth or the dilation of blood vessels.

Full-Thickness

Describes wounds or burns extending through the entire depth of the skin, potentially affecting underlying tissues as well.