The formula $H_2SO_4 + 2KOH \rightarrow K_2SO_4 + 2H_2O$ describes the reaction between sulfuric acid and potassium hydroxide.
In the titration done, 20 mL of KOH with an unknown concentration is put into a flask with bromthymol blue indicator. The KOH solution was titrated with a
0.25 M $H_2SO_4$ solution. Three trials were performed and each trial yielded to an endpoint of yellow-colored solution, which is the desired endpoint. After
three trials, the following readings were obtained: 15.5, 15.1, and 14.9 mL respectively.
Calculate the molarity of Potassium hydroxide. (Answer must be rounded off to 2 decimal places)