Question

1. Calculate the hydronium ion concentration and pH for a 0.042 M solution of sodium formate, NaHCO2. Kb for reaction of HCO2- ion with water is 5.6 × 10-11.

[H3O+]----------------M

pH---------------------

2.

What are the equilibrium concentrations of NH₃, NH₄⁺, and OH^- in a 0.42 M solution of ammonia? What is the pH of the solution?

Kb = 1.8 * 10^-5

[OH^-] ----------------------- M

[NH₄⁺] ----------------------M

[NH₃] ---------------------- M

pH----------------------------

Answer 1