2.23 explain the use of carbon dioxide in carbonating drinks and in fire extinguishers, in terms of its solubility and density

Uses of carbon dioxide

• Making carbonated drinks. Even though carbon dioxide is not very soluble in water in normal pressures, it becomes much more soluble when it is put under high pressures. This is a method used to make fizzy drinks.

• In fire extinguishers. Carbon dioxide does not support combustion and is more dense than air, so it 'sits' on top of the burning fuel and prevents oxygen from getting to it.