para-Aminobenzoic acid, PABA, is a powerful sunscreening agent whose salts are used widely in sun tanning and screening lotions. The parent acid, which we may symbolize as H-Paba, is a weak acid with a pka of 4.92. What will be the [H+] and pH of a 0.030 M solution of this acid? I need help solving this.
Answers ( if you want to check ):
pH = 3.22
[H+] = 6.0 x 10^-4 mol/l