Which of the following most accurately characterizes the solubility of these gases?

Question

NO, O2, CO, CH4, N2
A. Gases made up of multiple elements are more soluble at lower temperatures.
B. Gases composed of a single element are more soluble at higher temperatures.
C. All of these gases become more soluble at higher temperatures.
D. All of these gases are more soluble at lower temperatures.

Answer 1

The most accurate characterization of the solubility of the gases listed (NO, O2, CO, CH4, N2) is:

D. All of these gases are more soluble at lower temperatures.

In general, the solubility of gases in liquids decreases with increasing temperature. Therefore, these gases would be expected to be more soluble at lower temperatures.