Hi again Jon,
Chlorine dioxide is not acidic. Except when used under Miracle-Mineral-Supplement protocol.
The acid used to activate sodium chlorite is worked out to be totally used up in activation and the chlorine dioxide will take up the pH of the make up water.
Your questions are good, and worth while looking at, below is the amount of ClO2 released with the three main activators. These are indicative of Industry standards,