Which change would decrease the pH of a base in a solution at equilibrium?

Question

(1 point)
• increasing the strength of the base
• decreasing the concentration of OH ions
• increasing the initial concentration of solute
• decreasing the amount of water added to the solute

Answer 1

To decrease the pH of a base in a solution at equilibrium, you would need to decrease the concentration of hydroxide ions (OH⁻) in the solution.

Among the options listed, the correct choice is:

• decreasing the concentration of OH ions

This is because pH is inversely related to the concentration of hydroxide ions; as the concentration of OH⁻ decreases, the pH will decrease (become more acidic).

The other options would not result in a decrease in pH.