🤓 Based on our data, we think this question is relevant for Professor Lilly's class at HOWARDCC.
A monoprotic acid, HA, is dissolved in water:
HA + H2O ⇋ H3O+ + A-
The equilibrium concentrations of the reactants and products are
[HA] = 0.230 M
[H3O+] = 2.00x10-4 M
[A-] = 2.00x10-4 M
Calculate the Ka value for the acid HA.