Question

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

Answer 1

Precipitation of `"calcium carbonate"`

Explanation:

`Ca(NO_3)_2(aq) + Na_2CO_3(aq) rarr 2NaNO_3(aq) + CaCO_3(s)`

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

`Ca^(2+) + CO_3^(2-) rarr CaCO_3(s)darr`

Calcium carbonate is very poorly soluble in water; I think, from memory, to the tune of `15*mg*L^-1`.

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