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How does sodium chloride form in the reaction of hydrochloric acid and sodium hydroxide?

Answer and explanation

Correct answer: Sodium ion combines with chloride ion

The governing concept is neutralisation and ionic exchange. In water, HCl provides H⁺ and Cl⁻ ions, while NaOH provides Na⁺ and OH⁻ ions. H⁺ combines with OH⁻ to form water, and the remaining Na⁺ and Cl⁻ ions form sodium chloride: HCl + NaOH → NaCl + H₂O. Therefore option A is correct; the other pairings do not describe this reaction.

Related tags

ScienceClass10NeutralisationSodium-ChlorideAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And Behaviour

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