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