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A sodium chloride solution has pH about 7 but conducts electricity. What idea does this clarify?

Answer and explanation

Correct answer: A neutral solution can also contain ions

A pH near 7 describes the acid-base character of the sodium chloride solution, not the absence of charged particles. Sodium chloride dissolves and dissociates into mobile Na+ and Cl− ions, which carry electric current. Therefore option A is correct: neutrality and ionic conductivity can coexist. Options B and C incorrectly restrict conduction, while option D is false because sodium chloride is soluble in water.

Related tags

Sodium ChlorideNeutral SolutionConductivityAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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