(a) If 6 volumes of 12 mM KOH are mixed with 1 volume of 45 mM H3PO4, what will be the pH of the final mixture?
(b) If 30 µmoles of lactic acid is generated in a 4.0 ml enzymatic reaction buffered by 50 mM Naphosphate(pH 7.0), what will be the final pH of the reaction mixture? Lactic acid pKa = 3.86.