Is ammonium chloride neutral salt

Acid salts

Ammonium chloride as an acid salt

Here you can see picture 23 from my presentation "Corresponding acid / base pairs".

methodic procedure

The basic methodological idea that immediately makes sense to any student is this:

An acid gives off protons. In order for a particle to be an acid, it must have hydrogen atoms, which are also bound to another atom with a polar covalent bond.

A base accepts protons. To do this, the particle must have a lone pair of electrons and also have a very high electronegativity.

The two components of the salt will now be examined under these two aspects. Is the cation an acid or a base? Is the anion an acid or a base? Then it is decided whether the salt forms a neutral, acidic or alkaline solution with water.

  • Is NH4+ an acid? Yes, there is an H atom that is polar bonded to the N atom; in addition, the ion is positively charged, which favors the release of a positive proton.
  • Is NH4+a base? No, there is no longer any free electron pair.
  • Is Cl- an acid? No, there is no hydrogen atom.
  • Is Cl- a base? Yes, but H2O molecules do not give protons to Cl- from.

So one can summarize: The NH4+-Ion is sour, and the Cl--Ion reacts neutrally, so an acidic solution is formed when ammonium chloride is dissolved in water.

Incidentally, the pH value of a 0.1 molar solution of ammonium chloride is 5.1.