Ask Question
19 July, 11:55

Phosphoric acid is a polyprotic acid. Write balanced chemical equations for the sequence of reactions that phosphoric acid can undergo when it's dissolved in water. True or false?

+3
Answers (1)
  1. 19 July, 12:12
    0
    True. It is a polyprotic acid because it can release more than one proton. In this case this weak acid releases 3 protons, donated to water to increase the hydronium concentration. There are 3 equilibriums.

    Explanation:

    H₃PO₄ + H₂O ⇄ H₃O⁺ + H₂PO₄⁻ Ka₁

    H₂PO₄⁻ + H₂O ⇄ H₃O⁺ + HPO₄⁻² Ka₂

    HPO₄⁻² + H₂O ⇄ H₃O⁺ + PO₄⁻³ Ka₃

    Diprotic acids → They release 2 H⁺

    Carbonic acid

    Monoprotic acids → They release 1 H⁺

    Acetic acid
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “Phosphoric acid is a polyprotic acid. Write balanced chemical equations for the sequence of reactions that phosphoric acid can undergo when ...” in 📗 Chemistry if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers