- #1
gkangelexa
- 81
- 1
An buffer solution consists of a mixture of a weak acid and its salt (conjugate base and a cation)
or a mixture of a weak base and its salt (conjugate acid and an anion).
When you titrate (for example) a weak acid with a strong base, then at the half equivalence point, there are equal amounts of the acid and its conjugate base, right?
i think i understand that... I am confused where the pKa and the pH parts come in...
Why, when making a buffer solution, do we want to pick an acid whose pKa is close to the pH at which we want to buffer the solution?
or a mixture of a weak base and its salt (conjugate acid and an anion).
When you titrate (for example) a weak acid with a strong base, then at the half equivalence point, there are equal amounts of the acid and its conjugate base, right?
i think i understand that... I am confused where the pKa and the pH parts come in...
Why, when making a buffer solution, do we want to pick an acid whose pKa is close to the pH at which we want to buffer the solution?