# How does CO_2 cause ocean acidification?

## What chemically happens and how does it cause a decrease in pH?

Oct 7, 2017

Well, carbon dioxide is a so-called acidic oxide.

#### Explanation:

And we can represent its acidic behavior by invoking the solution behavior of dissolved carbon dioxide gas:

$C {O}_{2} + {H}_{2} O r i g h t \le f t h a r p \infty n s H C {O}_{3}^{-} + {H}_{3} {O}^{+}$

And if the concentration of protium ion increases how will $p H$ evolve?

What effect do you think this reaction will have on coral reefs, which consist of $C a C {O}_{3} \left(s\right)$?