pH of acids, bases and salts
Exercise 13

Using the table of acid-base couples, calculate the $pH$ of a 0.877 $M$ potassium hydrogencarbonate solution
$HCO_3^-$: ampholythe
$pH$ $=$ $\frac{1}{2}pKa_1$ $+$ $\frac{1}{2}pKa_2$ =
$\frac{1}{2}$ 6.3 + $\frac{1}{2}$10.32 =
8.31