What is a common use for buffer solutions in analytical chemistry?

Buffer solutions are critical in analytical chemistry for their ability to maintain a constant pH during reactions. This characteristic is especially important in various experimental settings where pH fluctuations can significantly affect the outcome of chemical reactions, enzymatic processes, and the stability of certain compounds. By providing a stable environment, buffers ensure that the reactions proceed under optimal conditions, which is crucial for accurate and reproducible analytical results.

For instance, in titrations, maintaining a specific pH can be essential for determining the endpoint accurately. It also helps in avoiding any side reactions that could occur due to shifts in pH. Therefore, the role of buffers in maintaining pH is foundational to many analytical techniques, making it a vital component in the field of analytical chemistry.