Final answer:
The name for the chemical formula H3PO4 is phosphoric acid, which is an oxyacid with three acidic protons, used as an additive in soft drinks.
Step-by-step explanation:
The correct name for the chemical formula H3PO4 is phosphoric acid. This compound forms colorless, deliquescent crystals that are commercially available as a viscous solution and is commonly added to soft drinks. Phosphoric acid is an oxyacid with three acidic protons and is known as a triprotic acid. The structure consists of three hydroxyl (-OH) groups and one double-bonded oxygen (=O) attached to a phosphorus (P) atom. When naming oxyanions with the -ate ending, the formula is to take the base name of the oxyanion and add 'ic' followed by 'acid', so the name for H3PO4 following this rule is phosphoric acid.