Which of the following is incorrect regarding carbon dioxide?

Options

A. It is a dense, colorless, and odoless gas.
B. It is not poisonous, unlike `CO`.
C. It is neither combustible nor a supporter of combustion.
D. It is slightly soluble in water and its solubility in water decreases with increase in pressure.

Answer

D

Explanation

Like all gases, its solubility in water increases with increase in pressure (Henry's law). Soda water and other aerated soft drinks are, in fact, solutions of `CO_(2)` in water (containing sugar, some flavoring agents, and coloring agents) under pressure.
It is about `1.5` times heavier than air. It does not burn of, normally, support combustion. The combination of high density and inertness has led to its use for extinguishing fires. Unlike `CO`, it does not form any complex with the iron of hemoglobin and, thus, is not toxic.