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The formation of only salt and water in an acid-base reaction best represents which idea?

Answer and explanation

Correct answer: Hydrogen ions and hydroxide ions combine to form water

The governing concept is neutralisation. In an aqueous reaction, an acid supplies H⁺ ions, represented more accurately as H₃O⁺, and a base supplies OH⁻ ions. These ions combine to form water: H⁺ + OH⁻ → H₂O. The remaining positive and negative ions combine to form the salt, so the overall products are salt and water. Hence option A is correct; the other statements are not general ionic reactions.

Related tags

NeutralisationIonsSalt And WaterAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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