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Equal volumes of acid and base are mixed, but the solution remains basic. What is the most likely reason?

Answer and explanation

Correct answer: The base supplied more effective hydroxide ions

Equal volume does not mean equal chemical amount. The base may have a higher concentration, may be stronger, or may provide more moles of effective OH⁻ than the acid provides moles of H⁺. After neutralisation, excess OH⁻ remains, making the mixture basic. Neutralisation does occur, but it may be incomplete with respect to the base. Thus A is correct; the other statements are chemically false.

Related tags

NeutralisationConcentrationBasic SolutionAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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