Question

What is the formula of a compound that contains K + and PO 4 3- ions? K 3P K 2PO 3 KPO 4 K 3PO 3 K 3PO 4

Answer 1

Formula that contains K+ and PO4-3

To find this formula, we need to exchange the oxidation states:

`K_3PO^{}_4\Rightarrow3K^++PO^(-3)_4`

The charge of the compound has to be 0.

---------------------------------------------------------

Let's see:

K+ is a cation.

PO4-3 is an anion.

These ions are from this compound K3PO4, a salt.

When a salt ionizes, it gives anion and cation.

Anion and cation are ions.