How do we calculate the #pH# of a buffer that is composed of #HPO_4^(2-)# and #H_2PO_4^(-)#?
The buffer equation tells us that
A buffer is formed by mixing appreciable quantities of a weak acid and its conjugate base. Such a mixture keeps the
Now this site gives
And thus solutions which contain tolerably equal concentrations of dihydrogen phosphate, and biphosphate, should have