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What Is a Conjugate Acid-Base Pair for the Following Equilibrium

Question 5

Multiple Choice

What is a conjugate acid-base pair for the following equilibrium?
H2O(l) + HPO42-(aq) What is a conjugate acid-base pair for the following equilibrium? H<sub>2</sub>O(l) + HPO<sub>4</sub><sup>2-</sup>(aq) H<sub>2</sub>PO<sub>4</sub><sup>-</sup>(aq) + OH<sup>-</sup>(aq) A) H<sub>2</sub>O is an acid and HPO<sub>4</sub><sup>2-</sup> is its conjugate base. B) HPO<sub>4</sub><sup>2-</sup> is an acid and OH<sup>-</sup> is its conjugate base. C) H<sub>2</sub>O is an acid and OH<sup>-</sup> is its conjugate base. D) HPO<sub>4</sub><sup>2-</sup> is an acid and H<sub>2</sub>PO<sub>4</sub><sup>-</sup> is its conjugate base. E) HPO<sub>4</sub><sup>2-</sup> is an acid and H<sub>2</sub>O is its conjugate base.
H2PO4-(aq) + OH-(aq)


A) H2O is an acid and HPO42- is its conjugate base.
B) HPO42- is an acid and OH- is its conjugate base.
C) H2O is an acid and OH- is its conjugate base.
D) HPO42- is an acid and H2PO4- is its conjugate base.
E) HPO42- is an acid and H2O is its conjugate base.

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