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Loading... May 4, 2019 · A buffer is an aqueous solution used to keep the pH of a solution nearly constant. A buffer consists of a weak acid and its conjugate base or a weak base and its conjugate acid. Buffer capacity is the amount of acid or base that can be added before the pH of a buffer changes.
- Anne Marie Helmenstine, Ph.D.
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What is a buffer in chemistry?
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Jan 21, 2024 · A buffer is a solution that maintains the stability of a system’s pH level when adding small quantities of acids or bases. This characteristic makes buffers important in biological and chemical applications where pH stability is crucial.
A buffer (or buffered) solution is one that resists a change in its pH when H + or OH – ions are added or removed owing to some other reaction taking place in the same solution. Buffers do so by being composed of certain pairs of solutes: either a weak acid plus its conjugate base or a weak base plus its conjugate acid .
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Sep 12, 2022 · A buffer is a solution containing acid and a proportionate amount of conjugate base capable of maintaining a stable pH when a small amount of additional acid or base is added to it. It’s a simple definition, but the underlying chemistry is a little bit complicated.
A buffer solution is a solution where the pH does not change significantly on dilution or if an acid or base is added at constant temperature. [1] Its pH changes very little when a small amount of strong acid or base is added to it. Buffer solutions are used as a means of keeping pH at a nearly constant value in a wide variety of chemical ...
Jan 30, 2023 · A buffer is a solution that can resist pH change upon the addition of an acidic or basic components. It is able to neutralize small amounts of added acid or base, thus maintaining the pH of the solution relatively stable.
Carbon dioxide is part of a prominent buffer system in the human body; it keeps the pH within the proper range. This buffer system involves carbonic acid (H 2 CO 3) and bicarbonate (HCO 3 –) anion. If too much H + enters the body, bicarbonate will combine with the H + to create carbonic acid and limit the decrease in pH.
