The dihydrogen phosphate ion, H2PO4- , is amphiprotic.In which of the following reactions is this ion serving as abase?(i) H3O+(aq) + H2PO4- (aq) ⇌ H3PO4(aq) + H2O(l)(ii) H3O+(aq) + HPO4 2 - (aq)⇌ H2PO4- (aq) + H2O(l)(iii) H3PO4(aq) + HPO42 - (aq) ⇌ 2 H2PO4- (aq)(a) i only (b) i and ii (c) i and iii (d) ii and iii(e) i, ii, and iii

Bronsted acid: An acid donates (loses) H+ ion. Bronsted Base: A base accepts (gains) H+ ion.…

Answered: The dihydrogen phosphate ion, H2PO4- ,…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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The dihydrogen phosphate ion, H₂PO₄^- , is amphiprotic.
In which of the following reactions is this ion serving as a
base?
(i) H₃O⁺(aq) + H₂PO₄^- (aq) ⇌ H₃PO₄(aq) + H₂O(l)
(ii) H₃O⁺(aq) + HPO₄ ^{2 -} (aq)⇌ H₂PO₄^- (aq) + H₂O(l)
(iii) H₃PO₄(aq) + HPO₄^{2 -} (aq) ⇌ 2 H₂PO₄^- (aq)
(a) i only (b) i and ii (c) i and iii (d) ii and iii
(e) i, ii, and iii

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