Question

[1300 Points :)] [Please provide the process] A monoprotic weak acid, HA, 1.00g, 100g/mol is titrated with NaOH (0.250 M). After the addition of 20.0 ml of NaOH the pH was 5.81. Calculate the initial moles of HA, the moles NaOH added, the moles of HA and A- after the addition of the addition of the NAOH and the pK_aof HA. Use the Henderson Hasselbach equation.

HA(aq) + OH^-(aq) -> A^-(aq) + H₂O

1) molHA_initial:

2) molNaOH_added:

3) mol HA after NaOH added:

4) mol A- _{after NaOH added}:

5) pKa: