Which element is oxidized in the reaction 3 P + 5 HNO₃ + 2 H₂O → 5 NO + 3 H₃PO₄ ?

Question

Quizplus · Accepted Answer

In this reaction, the oxidation states of the elements involved change. The oxidation state of phosphorus in the reactant (P) is 0, while in the product (H3PO4) it is +5. This means that phosphorus has been oxidized (lost electrons). None of the other elements (nitrogen and oxygen) have changed their oxidation states, so they are not oxidized or reduced. Therefore, the correct answer is A) phosphorus.

Which Element Is Oxidized in the Reaction 3 P