Osmosis video - Making buffer solutions

A buffer is a solution that resists changes in pH, and it generally consists of a weak acid and its conjugate base. There are two ways of making a buffer solution. The first way is to start with an aqueous solution of a weak acid and then add a soluble salt that contains the conjugate base. The second way to make a buffer solution is to start with an aqueous solution of a weak acid and then add a strong base to neutralize some of the weak acid. When some of the weak acid is neutralized, it turns into the conjugate base.