A. Write the chemical equation for the reaction of NH4+, a weak acid, with water

Question

A. Write the chemical equation for the reaction of NH4+, a weak acid, with water. Include states with your answer, and use the equilibrium arrow. List the product with nitrogen first in order to get your answer graded correctly.

B. Write the corresponding acidity constant expression for the reaction in part a.

C. Write the chemical equation for the reaction of HPO42, a weak acid, with water. Include states with your answer, and use the equilibrium arrow. List the product with phosphorus first in order to get your answer graded correctly.

D. Write the corresponding acidity constant expression for the reaction in part c

Explanation / Answer

A) NH4+ + H2O -----------> NH3 + H3O+

B) Ka = [NH3] [H3O+] / [ NH4+ ]

C) HPO42- + H2O ----------> PO43- + H3O+

D) Ka = [PO43- ] [H3O+ ] /[HPO42-]

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