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Is NH4+ a strong acid?

Mar 20，2024

NO, NH4+ (ammonium ion) is not a strong acid. NH4+ is the conjugate acid of the weak base ammonia (NH3). It is a weak acid. This is because they are in equilibrium in solution. It partially supplies protons (H+) in aqueous solution, resulting in a low concentration of H+ ions and a higher pH than strong acids. This means that there is always some NH3 and NH4+ present in the equilibrium between NH3 and NH4+.

AMMONIUM

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    The NH4+ flame test, also known as the Ammonium flame test, is performed in a laboratory setting to identify the presence of ammonium ions (NH4+) in a given substance or solution.

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AMMONIUM

14798-03-9