translate English to German: The ammonium ion can act as a very weak Brønsted-Lowry acid in the sense that it can protonate a stronger base using any one of its hydrogen ( H ) atoms and convert back to ammonia. This means that the ammonium ion is a conjugate acid of the base ammonia.
Das Ammonium-Ion NH4+ ist die konjugierte Säure zur Base Ammoniak NH3.