Question

What is the net ionic equation for the reaction between sodium carbonate, and zinc nitrate?

Answer 1

Well, zinc carbonate is fairly insoluble so..............

Explanation:

`CO_3^(2-) + Zn^(2+) rarr ZnCO_3(s)darr`

What becomes of the acetate and potassium ions?

How did I know that zinc carbonate was insoluble? How else by learning it by rote?

`"All the salts of the alkali metals (and"` `NH_4^+`), `"and all the acetates are soluble."`

`"All nitrates are soluble."`

`"All halides are soluble except for those of"` `Pb^(2+)`, `Hg_2^(2+)`, and `Ag^+`.

`"All sulfates are soluble, except for those of"` `Pb^(2+)`, `Ba^(2+),` and `Sr^(2+)`.

`"All CARBONATES AND HYDROXIDES (except for those of"`
`"the alkali metals) ARE INSOLUBLE."`

You will be given such a scheme, and the exceptions, and I suggest you learn them. You will also do these sorts of partner exchanges reactions in the lab.