Question

How do you calculate the pH of a buffer?

Answer 1

You need details of the acid used, and specific concentrations of acid and base from which it was composed.......

Explanation:

See this old answer and links......

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

And thus in equimolar quantities of weak acid and conjugate base, the `pH` of the buffer is equal to the `pK_a` of the weak acid. Why?