Calculate the `pH` of the following mixtures given `(pK_(a) = pK_(b) = 4.7447)`:
a. `50mL 0.1 M NaOH +50mL 0.1MCH_(3)COOH`
b. `50mL 0.1 m NaOH +50mL 0.05 M CH_(3)COOH`
c. `50mL 0.05M NaOH +50mL 0.1 M CH_(3)COOH`
d. `50mL 0.1M NH_(4)OH +50mL 0.05 MHCI`
e. `50mL 0.05M NH_(4)OH +50mL 0.1 MHCI`
f. `50mL 0.05 M NH_(4)OH + 50mL 0.05 M CH_(3)COOH`

Answer

(a) `12.3979`, (b) `4.7447`, (c ) `8.7218`,
(d)`9.2553`, (e ) `1.6021`, (f) `5.2782`, (g) 7 ;