Question

multiple - choice question
when co₂ reacts with water what does it create?
acetic acid, which can dissolve living organisms.
carbonic acid, which causes the ocean to become more acidic.
calcium carbonate, which does not dissolve well in water.
bicarbonate ions, which cause the ocean to become more alkaline.

Explanation:

The chemical reaction between carbon - dioxide ($CO_2$) and water ($H_2O$) forms carbonic acid ($H_2CO_3$). The reaction is $CO_2 + H_2O
ightleftharpoons H_2CO_3$. This process is one of the reasons for ocean acidification.

Answer:

carbonic acid, which causes the ocean to become more acidic.