phosphoric acid ($h_3po_4$) is a polyprotic acid. write balanced chemical equations for the sequence of…

phosphoric acid ($h_3po_4$) is a polyprotic acid. write balanced chemical equations for the sequence of reactions that phosphoric acid can undergo when its dissolved in water.

phosphoric acid ($h_3po_4$) is a polyprotic acid. write balanced chemical equations for the sequence of reactions that phosphoric acid can undergo when its dissolved in water.

Answer

Explanation:

Step1: First - dissociation step

$H_{3}PO_{4}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+H_{2}PO_{4}^{-}(aq)$

Step2: Second - dissociation step

$H_{2}PO_{4}^{-}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+HPO_{4}^{2 - }(aq)$

Step3: Third - dissociation step

$HPO_{4}^{2 - }(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+PO_{4}^{3 - }(aq)$

Answer:

$H_{3}PO_{4}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+H_{2}PO_{4}^{-}(aq)$ $H_{2}PO_{4}^{-}(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+HPO_{4}^{2 - }(aq)$ $HPO_{4}^{2 - }(aq)+H_{2}O(l)\rightleftharpoons H_{3}O^{+}(aq)+PO_{4}^{3 - }(aq)$