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27 Οκτ 2017 · pKa is an acid dissociation constant used to describe the acidity of a particular molecule. Its value is directly related to the structure of the given compound.
Ammonia is an inorganic chemical compound of nitrogen and hydrogen with the formula N H 3. A stable binary hydride and the simplest pnictogen hydride, ammonia is a colourless gas with a distinctive pungent smell.
Ammonia | NH3 or H3N | CID 222 - structure, chemical names, physical and chemical properties, classification, patents, literature, biological activities, safety/hazards/toxicity information, supplier lists, and more.
28 Απρ 2021 · Similarly, in the reaction of ammonia with water, the hydroxide ion is a strong base, and ammonia is a weak base, whereas the ammonium ion is a stronger acid than water. Hence this equilibrium also lies to the left:
If you are asked to say something about the basicity of ammonia (NH 3) compared to that of ethoxide ion (CH 3 CH 2 O-), for example, the relevant pK a values to consider are 9.2 (the pK a of ammonium ion) and 16 (the pK a of ethanol). From these numbers, you know that ethoxide is the stronger base.
Ammonia is the conjugate acid of the base, so now, we can use the pKa table to write the acid-base reaction with the pKa value of ammonia. Ammonia is an amine, and amines have a pKa ~ 38, so the reaction goes from pKa ~ 25 to pKa ~ 38 which is a favorable pKa change and that is why this reaction would work:
7 Ιουλ 2024 · This pKa calculator helps you find the pKa from pH with the Henderson-Hasselbalch equation or with acid dissociation constant (Ka) values.
