Question

At sea level, an odorless and colorless liquid A boil at a range of 100°C to 105°C .What inference can be drawn from this observation?
A. Liquid A is a mixture
B. Liquid A is an element
C. Liquid A is a compound
D. Liquid A is a pure substance

Answer 1

I think it should be c

Answer 2

The correct option is (c).Liquid A is a compound.

Explanation:

• When the vapor pressure of a liquid equals the pressure placed on by its surroundings, the liquid boils.

• The usual boiling of water is 100°C because the vapor pressure of water is 760mmgHg.

• The atoms of a few elements do not readily bond with other elements to form compounds. These are called noble or inert gases: helium, neon, argon, krypton, xenon, and radon. Certain elements readily combine with other elements to form compounds. Examples are oxygen, chlorine, and fluorine.

• There are 1 ATM, at this temperature.