When an acid is added to a basic solution, the pH of the solution
A) increases.
B) decreases.
C) is unchanged.
D) Any of these choices could be correct, depends on the natures of the acid and base.

Question

Quizplus · Accepted Answer

When an acid is added to a basic solution, it undergoes a neutralization reaction. This reaction produces water and a salt, which may or may not be acidic or basic. However, in the process of neutralization, the acidic hydrogen ions (H+) from the acid combine with the basic hydroxide ions (OH-) from the base to form water. This decreases the concentration of hydroxide ions in solution and increases the concentration of hydronium ions (H3O+), thus decreasing the pH of the solution. Therefore, the pH of the solution decreases when an acid is added to a basic solution.

When an Acid Is Added to a Basic Solution, the PH