Question

Question #4c074

Answer 1

The full ionic equation for the mixture is

`3Ca^(2+) + 6OH^-` `+ 6NH_4^+ + 2PO_4^(3-) rarr Ca_3(PO_4)_2+ 6NH_4^+ + 6OH^-`

but check below for the net ionic equation, as well.

Explanation:

In solution, calcium hydroxide will dissociate into one `Ca^(2+)` ion and two `OH^-` ions.

Ammonium phosphate will form three `NH_4^+` ions and one `PO_4^(3-)` ion.

A check of a list of solubility rules will confirm that the combination of `Ca^(2+)` and `PO_4^(3-)` form an insoluble ionic solid called calcium phosphate.

The formula for calcium phosphate is `Ca_3(PO_4)_2` based on the fact that the the total charge on every ionic solid must be zero.

The full ionic equation for the mixture is

`3Ca^(2+) + 6OH^-` + `6NH_4^+ + 2PO_4^(3-) rarr Ca_3(PO_4)_2+ 6NH_4^+ + 6OH^-`

The net ionic equation is:

`3Ca^(2+) + 2PO_4^(3-) rarr Ca_3(PO_4)_2`