B) False
Explanation:
Phosphoric acid (H₃PO₄) and boric acid (H₃BO₃) are weak acids, so they will not fully dissociate in solution.
Bellow you mai find the dissociation reactions of the acids:
H₃PO₄ + H₂O ⇄ H₂PO₄⁻ + H₃O⁺
H₂PO₄⁻ + H₂O ⇄ HPO₄²⁻ + H₃O⁺
HPO₄²⁻ + H₂O ⇄ PO₄³⁻ + H₃O⁺
Phosphoric acid (H₃PO₄) produces four ions in solution: H₂PO₄⁻, HPO₄²⁻, PO₄³⁻ and H₃O⁺.
H₃BO₃ + H₂O ⇄ H₂BO₃⁻ + H₃O⁺
H₂BO₃⁻ + H₂O ⇄ HBO₃²⁻ + H₃O⁺
HBO₃²⁻ + H₂O ⇄ BO₃³⁻ + H₃O⁺
Boric acid (H₃BO₃) produces four ions in solution: H₂BO₃⁻, HBO₃²⁻, BO₃³⁻ and H₃O⁺.
Learn more about:
acid and bases
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