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Given the Following Acid Dissociation Constants,
Ka (H3PO4)= 7 ×\times 10-3
Ka (NH4+)= 5

question 54

Multiple Choice

Given the following acid dissociation constants,
Ka (H3PO4) = 7.5 ×\times 10-3
Ka (NH4+) = 5.6 ×\times 10-10
Determine the equilibrium constant for the reaction below at 25 \circ C.H3PO4(aq) + NH3(aq)  Given the following acid dissociation constants, K<sub>a</sub> (H<sub>3</sub>PO<sub>4</sub>) = 7.5  \times  10<sup>-3</sup> K<sub>a</sub> (NH<sub>4</sub><sup>+</sup>) = 5.6  \times  10<sup>-10</sup> Determine the equilibrium constant for the reaction below at 25 <sup> \circ </sup>C.H<sub>3</sub>PO<sub>4</sub>(aq) + NH<sub>3</sub>(aq)    NH<sub>4</sub><sup>+</sup>(aq) + H<sub>2</sub>PO<sub>4</sub><sup>-</sup>(aq)  A)  4.2  \times  10<sup>-12</sup> B)  7.5  \times  10<sup>-8</sup> C)  4.2  \times  10<sup>2</sup> D)  1.3  \times  10<sup>7</sup> E)  2.4  \times  10<sup>11</sup> NH4+(aq) + H2PO4-(aq)


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