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Why does an aqueous solution of sodium chloride conduct electricity even though it may be neutral?

Answer and explanation

Correct answer: Because it contains mobile sodium and chloride ions

Electrical conduction in an aqueous solution requires mobile charged particles. Sodium chloride dissociates in water into Na⁺ and Cl⁻ ions; when a potential difference is applied, these ions move toward opposite electrodes and carry current. Neutrality refers to the overall acid-base condition, approximately pH 7, not to an absence of ions. Thus a neutral NaCl solution can conduct electricity. Sugar does not provide ions, colour is irrelevant, and free electrons are not the main carriers in solution. Option A is correct.

Related tags

Sodium ChlorideConductivityIonsAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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