Grade 7 pH question.

[njkid]

The tern "buffer" is used in many products. What is a buffer? Some weak acids and bases work as a buffer system. Biocarbonate (HCO3-) is a common ion in your blood stream which acts as a buffer. Write an equation for how the pH of blood is restored to normal range when it bocomes acidic using buffering agent.

Isnt buffer a thing that neutrolizes the pH? I really need help...

[Ouabache]

Actually a buffer solution (in chemistry) resists a change in pH.. Here is a reference (http://en.wikipedia.org/wiki/Buffer_solution) that offers a useful explanation.