Question

Why would a buffer be important to homeostasis?

Answer 1

Does not homeostasis entail `"stability in the face of change?"`

Explanation:

And as you know buffers work by preventing gross changes in `pH`. See here for an account of their action. Depending on the capacity of the buffer, `pH` is restricted to a value tolerably CLOSE to the `pK_a` of the acid.

The buffer equation tells you this:

`pH=pK_a+log_10{[[A^-]]/[[HA]]}`

Changes in the concentration of acid or base are moderated by the logarithmic function.