Final answer:
The formula of the salt produced in the neutralization reaction is Na₂HPO4. An acid is characterized by properties such as the ability to conduct electricity and to produce hydrogen ions in water.
Explanation:
The salt formula produced in the complete neutralization reaction between phosphoric acid (H3PO4) and sodium hydroxide (NaOH) will be Na₂HPO4. This is because when H3PO4 reacts with NaOH, it forms Na₂HPO4. The balanced equation for this reaction is:
H3PO4 + 2NaOH -> Na₂HPO4 + 2H2O
Properties that describe an acid include the ability to conduct electricity and produce hydrogen ions in water. Therefore, option C—Producing hydrogen ions in water—describes an acid.
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