What are the uses of buffer solutions?

Question

Cameron Andrews · Accepted Answer

Buffers are used to keep the #pH# of solution tolerably close to a given value..........

See this old link. And given the buffer equation......... #pH=pK_a+log_10{[[A^-]]/[[HA]]}# To keep #pH# around a certain value we choose an acid whose #pK_a# is close to the desired #pH#. Biological systems are extensively buffered.

Henry Antrim · Answer

undefined Buffer solutions are commonly used in various laboratory and industrial applications, including:

1. Maintaining pH levels in chemical reactions and biological processes.
2. Stabilizing the pH of solutions in analytical chemistry, such as in titrations.
3. Providing a stable environment for enzymes and other proteins to function optimally.
4. Controlling the pH of biological systems, including cell culture media and physiological fluids.
5. Improving the stability of pharmaceutical formulations.
6. Preventing sudden changes in pH caused by the addition of acids or bases.
7. Acting as a reference solution for calibration of pH meters and electrodes.
8. Enhancing the effectiveness of certain chemical reactions by maintaining optimal pH conditions.
9. Facilitating the separation and purification of biomolecules in chromatography techniques.
10. Serving as a component in electrochemical systems, such as in batteries and fuel cells.