P4 -> H3PO : Balance the equation for a half-reaction that occurs in acidic solution. Use e− as the symbol for an electron.

Answer 1

Do you mean H₃PO₄ ?

1) Balance oxidized material: P₄ → 4H₃PO₄

2) Balance O with H₂O: P₄ + 16H₂O → 4H₃PO₄

3) Balance H with H+: P₄ + 16H₂O → 4H₃PO₄ + 20H⁺

4) Balance charge with e^-: P₄ + 16H₂O → 4H₃PO₄ +20H⁺ + 20e^-

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