Question

Define buffer solution . give an example of acidic and basic buffer​

Answer 1

Answer:

Acidic buffers are solutions that have a pH below 7 and contain a weak acid and one of its salts. For example, a mixture of acetic acid and sodium acetate acts as a buffer solution with a pH of about 4.75. Alkaline buffers, on the other hand, have a pH above 7 and contain a weak base and one of its salts.Buffers are solutions that resist a change in pH on dilution or on addition of small amounts of acids or alkali.

A lot of biological and chemical reactions need a constant pH for the reaction to proceed. Buffers are extremely useful in these systems to maintain the pH at a constant value. This does not mean that the pH of buffers does not change. It only means that the change in pH is not as much as it would be with a solution that is not a buffer.

Answer 2

A buffer solution (more precisely, pH buffer or hydrogen ion buffer) is an aqueous solution consisting of a mixture of a weak acid and its conjugate base, or vice versa. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical applications.

Acidic buffer example: Mixture of acetic acid and sodium acetate.

Basic buffer example: Mixture of ammonium hydroxide and ammonium chloride.

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