For which of the solutions listed below is pH = pKa?, assignment help

Formic acid, HCOOH, is a weak acid. (1)For which of the solutions listed below is pH = pKa? Select all that apply.

a. 0.10 mol HA and 0.050 mol of OH- in 1.0 L of solution

b. 0.10 mol HA and 0.150 mol of A- in 1.0 L of solution

c. 0.10 mol HA and 0.050 mol of A- in 1.0 L of solution


(2) For which of the solutions listed below is pH < pKa? Select all that apply.

a. 0.10 mol HA and 0.150 mol of A- in 1.0 L of solution

b. 0.10 mol HA and 0.050 mol of A- in 1.0 L of solution

c. 0.10 mol HA and 0.050 mol of OH- in 1.0 L of solution

 
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