# What kind of reaction is represented by carbonate + acid -> salt + water + carbon dioxide?

Oct 13, 2016

This is an acid base reaction.

#### Explanation:

$C {O}_{3}^{2 -} + 2 {H}^{+} \rightarrow {H}_{2} O + C {O}_{2} \left(g\right) \uparrow$

The weak base, carbonate, reacts with 1 or 2 equivalents of acid to give $H C {O}_{3}^{-}$ or ${H}_{2} C {O}_{3}$, i.e. hydrated carbon dioxide, ${H}_{2} O \cdot C {O}_{2}$.