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If the amount of hydroxide ions in a solution is increased, what will happen to its pH?

Answer and explanation

Correct answer: The pH will increase

The pH scale describes the acidic or basic nature of an aqueous solution. A higher concentration of hydroxide ions, [OH⁻], makes the solution more basic. Because pOH decreases as [OH⁻] increases and pH + pOH = 14 at 25°C, the pH rises, generally above 7. Thus option A is correct. Option B describes increasing acidity, while C and D are not general consequences of adding hydroxide ions.

Related tags

Hydroxide IonsPhBasicityAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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