# What would occur when a solution of sodium carbonate was added to a solution of calcium nitrate?

Aug 14, 2016

Precipitation of $\text{calcium carbonate}$

#### Explanation:

$C a {\left(N {O}_{3}\right)}_{2} \left(a q\right) + N {a}_{2} C {O}_{3} \left(a q\right) \rightarrow 2 N a N {O}_{3} \left(a q\right) + C a C {O}_{3} \left(s\right)$

Or, since the nitrate and sodium ions are along for the ride, we could write a net ionic equation:

$C {a}^{2 +} + C {O}_{3}^{2 -} \rightarrow C a C {O}_{3} \left(s\right) \downarrow$

Calcium carbonate is very poorly soluble in water; I think, from memory, to the tune of $15 \cdot m g \cdot {L}^{-} 1$.

In acidified water, would you expect calcium carbonate to have greater solubility?