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Water is formed by which ions in neutralisation?

Answer and explanation

Correct answer: Hydrogen ion and hydroxide ion

During neutralisation, the characteristic ions of an acid and a base react directly. A hydrogen ion combines with a hydroxide ion to produce one water molecule: H⁺ + OH⁻ → H₂O. Therefore option A is correct. Sodium and chloride ions can form sodium chloride, while calcium–carbonate and copper–sulphate combinations represent salts or precipitates; they are not the ions that directly form water.

Related tags

NeutralisationHydrogen IonHydroxide IonAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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