100 ml H2SO4 0,1 m + 100 ml NaoH 0,2 m adalah

H2SO4 = M × v = 0,1 × 100 = 10
NaOH = M × v = 0,2 × 100 = 20
Mb = 20-10/200 =0,05
OH- = Mb × b
= 0,05 × 1
=5 × 10^-2
Poh = 2-log5
Ph=14-(2-log5)
=12+log5