# Metal carbonates (such as: CaCO3, Na2CO3 etc) are ACIDIC in nature or BASIC? Thanks

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$C {O}_{3}^{2 -} + {H}_{2} O r i g h t \le f t h a r p \infty n s H C {O}_{3}^{-} + O {H}^{-}$
At equilibrium, a small concentration of hydroxide will be present. The $C {a}^{2 +}$ and $N {a}^{+}$ counterions are simply along for the ride, and do not influence $p H$.