The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is ________.
A)6.29
B)7.00
C)8.11
D)5.78
E)0.00

Question

Quizplus · Accepted Answer

This is a neutralization reaction between a strong acid (HCl) and a strong base (KOH). The products will be water and a salt (KCl).

HCl + KOH → KCl + H2O

The balanced equation shows that equal moles of acid and base are used, so the resulting solution will be neutral (pH = 7). Therefore, the answer is B.

The PH of a Solution Prepared by Mixing 50