The pH of a solution prepared by mixing 45.0 mL of 0.183 M KOH and 35.0 mL of 0.145 M HCl is ________.
A)1.314
B)1.403
C)0.00824
D)12.597
E)12.923

Question

Quizplus · Accepted Answer

The solution is a mixture of a strong base (KOH) and a strong acid (HCl). Calculate the moles of KOH and HCl, find the excess moles of KOH, and then calculate the pH from the concentration of OH⁻ ions. The excess KOH results in a basic solution, leading to a pH greater than 7.

The PH of a Solution Prepared by Mixing 45