[ELI5] Why is CO2, as opposed to other inert gases, the primary and seemingly only gas used to make soda?

Question

[ELI5] Why is CO2, as opposed to other inert gases, the primary and seemingly only gas used to make soda?

In: 3

Answer 1

CO2 reacts with water under pressure to make carbonic acid. This is what makes soda taste acidic. Other gasses used in food such as nitrogen and nitrus oxide does not have the same chemical reaction with water and does not make noticeable amounts of acid.