Which change would decrease the pH of a base in a solution at equilibrium?(1 point)

Question

decreasing the amount of water added to the solute
increasing the strength of the base.
increasing the initial concentration of solute
decreasing the concentration of OH– ions

Answer 1

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

The pH scale measures the concentration of hydrogen ions (H⁺) in a solution, and since pH and pOH are related (pH + pOH = 14 for aqueous solutions), reducing the concentration of OH⁻ (hydroxide ions) will increase the concentration of H⁺ ions, thus decreasing the pH.

Therefore, the correct change that would decrease the pH of a base in solution at equilibrium is:

decreasing the concentration of OH⁻ ions.