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A solution turns red litmus blue and feels soapy to touch. Which ions give it basic properties?

Answer and explanation

Correct answer: Hydroxide ions

A solution that turns red litmus blue is basic, and a slippery or soapy feel is another common indication of basicity. In aqueous chemistry, bases furnish hydroxide ions, OH⁻, either directly or through reactions with water. These ions are responsible for the characteristic basic properties. Thus option A is correct. Hydrogen ions are associated with acids, while chloride and sulphate ions are spectator ions in many common solutions and do not by themselves explain the observation.

Related tags

Basic IonsHydroxideLitmusAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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