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Which salt solution is likely to have a pH less than 7?

Answer and explanation

Correct answer: Ammonium chloride

A solution with pH less than 7 is acidic. Ammonium chloride is produced from a strong acid, hydrochloric acid, and a weak base, ammonia. In water, NH₄⁺ undergoes partial hydrolysis and forms H₃O⁺ ions, giving the solution an acidic character. Sodium chloride is approximately neutral, while sodium carbonate and washing soda, sodium carbonate decahydrate, give basic solutions because carbonate ions produce OH⁻ through hydrolysis. Therefore ammonium chloride is the correct answer.

Related tags

Acidic SaltAmmonium ChloridePhAcidsBasesAnd SaltsAcids Bases And SaltsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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