Question

What are the products of `CaCl_2 + Na_2CO_3`?

Answer 1

A solid precipitate of calcium carbonate would result from aqueous carbonate and calcium ions.

Explanation:

`CaCl_2(aq) + Na_2CO_3 rarr CaCO_3(s)darr + 2NaCl(aq)`

Sodium carbonate is soluble, however, calcium carbonate, the metathesis product, is reasonably insoluble in aqueous solution; wiki reports `0.013*g*L^-1` at `25` `""^@C`.