Buffer solutions (also known as pH buffers) are resistant to any pH changes from a strong base or acid presence. Buffer solutions allow for the pH to stay at a constant level due an equilibrium balance. These are used in several applications, such as blood in the human body as a buffer solution.
Buffer solutions offer a balanced pH but that doesn’t mean the buffer solutions have a neutral pH. They can balance the solution from external influences that can change the pH levels.
Buffer solutions have several uses, with many chemical reactions needing a constant pH and include: