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Which of the following salts is formed from a strong acid and a strong base and has an aqueous solution that is approximately neutral \(\text{pH} \approx 7\)?

Answer and explanation

Correct answer: Sodium chloride

Sodium chloride \(\text{(NaCl)}\) is formed from the strong acid hydrochloric acid \(\text{(HCl)}\) and the strong base sodium hydroxide \(\text{(NaOH)}\). \(\text{Na}^+\) and \(\text{Cl}^-\) do not undergo significant hydrolysis in water, so the solution remains approximately neutral (\(\text{pH} \approx 7\)). In contrast, ammonium chloride is acidic because \(\text{NH}_4^+\) behaves as an acid in water.

Related tags

Acids Bases SaltsNeutral SaltsPh ScaleSalt HydrolysisClass 10 Science

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