Important Notice: Our web hosting provider recently started charging us for additional visits, which was unexpected. In response, we're seeking donations. Depending on the situation, we may explore different monetization options for our Community and Expert Contributors. It's crucial to provide more returns for their expertise and offer more Expert Validated Answers or AI Validated Answers. Learn more about our hosting issue here.
The buffer capacity is the resistance of the system to a change in pH. It is measured, or calculated, in equivalents of acid or base that change pH by 1.0 unit in 1 liter of solution. As shown in the graph below, Fumaric Acid has greater buffer capacity than other acids near a pH of 3.0. This is due to its low molecular weight and to its low dissociation constant.
