What product(s) forms at the anode in the electrolysis of an aqueous solution of k3po4?

O₂ and H⁺

Explanation:

In electrolysis, the anode is the electrode where the oxidation occurs. Neither K⁺ nor PO₄³⁻ can oxidize because K and P are in their highest oxidation states. Then, oxygen in water will oxidize according to the following half-reaction:

Oxidation: 2 H₂O(l) → O₂(g) + 4 H⁺(aq) + 4 e⁻

As we can see, the products at the anode are O₂ and H⁺.

it is stable as it is in group 0 which have full outer shells of electrons