Question

Carbon dioxide will dissolve in water under high pressure. So is there a high pressure created while it is raining so that carbon dioxide can dissolve in water to form carbonic acid?

Answer 1

In cold drinks we dissolve CO₂ at high pressure so it will remain in solution for long time and will not come out until the pressure will not release. Here CO₂ is present in high concentration.
Whereas in rain water; CO₂ dissolve up to a certain level and also form carbonic acid that causes acidic nature of rainy water but CO₂ also remains in the gaseous state. So we can say that CO₂ remains in both gaseous and soluble state in rain water but at high pressure, it will completely soluble.