Question

How do barium nitrate and sodium carbonate react in aqueous solution?

Answer 1

`Ba(NO_3)_2(aq) + Na_2CO_3(aq) rarr BaCO_3(s)darr + 2Na(NO_3)(aq)`

Explanation:

All nitrates are soluble (in aqueous solution). All carbonates are INSOLUBLE (except for those of the alkali metals). Barium carbonate is certainly insoluble.

The net ionic equation for the above:

`Ba^(2+) + CO_3^(2-) rarr BaCO_3(s)darr`

As for any equation, both mass and charge are conserved. What does this mean with respect to the 2nd equation?