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Which ion do bases give when dissolved in water?

Answer and explanation

Correct answer: Hydroxide ion

By the Arrhenius definition, a base produces hydroxide ions, OH⁻, when it dissolves or dissociates in water. For example, sodium hydroxide separates as NaOH → Na⁺ + OH⁻. Therefore option B is correct. Hydrogen ions indicate acidity, whereas chloride and nitrate ions may occur in particular salts but are not the defining ions of all bases.

Related tags

BasesHydroxide IonAlkaliAcidsAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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