Problem: A buffer contains significant amounts of ammonia and ammonium chloride.Write an equation showing how this buffer neutralizes added acid (HCl).

FREE Expert Solution

We're being asked to write an equation showing how a buffer neutralizes an added acid (HCl). The buffer is made up of ammonia and ammonium chloride.

Ammonia is a neutral amine and has a formula of NH3

In a solution, ammonia will ionize to produce its conjugate acid. Recall from Bronsted-Lowry definition, bases are proton (H+) acceptors and acids are proton (H+) donors

NH3 will accept H+ from H2O

     NH3     +     H2O    →      NH4+     +     OH-
   (weak base)                       (conjugate acid)

• ammonium chloride has a formula of NH4Cl. It contains the conjugate acid. It is an ion and will break up in the solution: 

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Problem Details

A buffer contains significant amounts of ammonia and ammonium chloride.

Write an equation showing how this buffer neutralizes added acid (HCl).

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