Determine the pH of a 0.741 M KOH solution at 25°C.

Answer 1

pOH = -log([OH-}

pOH = -log(0.741)

pOH = 0.130

pH + pOH = 14

pH = 14 - pOH

pH = 14 - 0.130

pH = 13.9 (rounded to 3 sig figs as the molarity given is the same)