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A student says that distilled water is a good conductor of electricity because it contains H⁺ and OH⁻ ions. What is the correct correction to this statement?

Answer and explanation

Correct answer: Distilled water has a very low concentration of ions, so it is a very poor conductor of electricity.

Pure water undergoes slight self-ionisation, represented by H₂O ⇌ H⁺ + OH⁻, but the concentrations of these mobile ions are extremely small. Therefore distilled water conducts electricity very poorly, so option A correctly revises the student’s statement. Dissolved salts increase conductivity by supplying more ions; water does not contain only hydroxide ions, and its ions do not disappear completely.

Related tags

Distilled WaterElectrical ConductivityIonsSelf IonisationAcids Bases SaltsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And Behaviour

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