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A salt solution turns red litmus blue. It may be formed from which type of acid and base?

Answer and explanation

Correct answer: Weak acid and strong base

The governing concept is the hydrolysis and nature of salts. A salt produced from a weak acid and a strong base generally gives a basic solution because the conjugate base of the weak acid reacts with water to produce hydroxide ions. This turns red litmus blue, so option B is correct. Strong acid–weak base salts are usually acidic, strong–strong salts are approximately neutral, and acid plus water is not a salt-forming combination.

Related tags

Basic SaltLitmusSalt HydrolysisAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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