Calculate the [H3O+] and the concentrations of A- and HA in the 1/2 neutralized solution. (Note that [H3O+} does not equal [A-]).
The mass of acetic acid solution is 30.01 g
Volume of the NaOH added to 1/2 neutralize the acetic acid is 6.2 mL
Measured pH of 1/2 neutralized solution is 4.8
The concentration of standardization NaOH titration is 0.09755 mol/L
The average pH value is 4.8
PKa 4.8
Ka 1.58x10^-5
** In my notes it says that the [HA]=[A-]** This is where I am getting confused.
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