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Water is formed in neutralisation by combination of which ions?

Answer and explanation

Correct answer: Hydrogen ion and hydroxide ion

The governing ionic concept of neutralisation is that hydrogen ions from an acid react with hydroxide ions from a base. They combine in a 1:1 ratio to form water: H⁺ + OH⁻ → H₂O. Sodium and chloride ions may remain in a sodium chloride solution, but they do not form water. The calcium-carbonate and copper-sulphate pairs also represent other ions, not the water-forming combination. Hence option A is correct.

Related tags

NeutralisationIonsWaterIonic EquationAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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