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Which aqueous solution is expected to produce the highest amount of hydroxide ions?

Answer and explanation

Correct answer: Sodium hydroxide

Hydroxide ions are responsible for the basic character of an aqueous solution. Sodium hydroxide is a soluble strong base, so it dissociates almost completely in water: NaOH → Na⁺ + OH⁻. Ethanoic acid produces H⁺ ions and is weak, sodium chloride is approximately neutral in water, and carbon dioxide water is acidic because carbonic acid forms. Therefore sodium hydroxide is expected to provide the greatest OH⁻ concentration, making option A correct.

Related tags

Strong BaseHydroxide IonsSodium HydroxideAqueous SolutionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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