Question

What is the name for the acid `H_3PO_4`?

Answer 1

Phosphoric acid.

Explanation:

The polyatomic ion `"PO"_4^(3-)` is phosphate and that gives this acid its root "phosphor".

And don't forget the rule in naming acids "ate ic, ite ous" which means any polyatomic that ends in "ate" normally gets replaced by the ending "ic" when naming an acid that is based off of that polyatomic ion and any polyatomic that ends in "ite" normally gets replaced by "ous" when naming an acid that is based from that polyatomic.