Question

Which of the following would decrease the pH level of an acidic solution? (2 points) adding a base to the acid increasing the concentration of hydroxide ions decrease the concentration of hydronium ions increasing the number of hydrogen ions

Answer 1

Answer:

increasing the number of hydrogen ions.

Explanation:

• pH is a measure of the acidity or alkalinity of a solution.

pH = -log[H⁺].

• The presence of H⁺ is the responsible of the acidity of the solution.

• As the concentration of H⁺ increases, the acidity of the solution increases and so, pH decreases.

• So, the right choice is: increasing the number of hydrogen ions.