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Which ion does sodium hydroxide give in water?

Answer and explanation

Correct answer: Hydroxide ion

The governing concept is the ionisation of bases in aqueous solution. Sodium hydroxide dissociates in water according to NaOH(aq) → Na⁺(aq) + OH⁻(aq). The hydroxide ion increases the basic character of the solution, so option C is correct. Hydrogen ions are associated with acids, while carbonate and chloride ions are not produced by sodium hydroxide alone.

Related tags

Sodium HydroxideHydroxide IonBasesAcidsAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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