hitunglah ph dan kh CH3CooNa 0,5M dengan nila Ka 2x10^-5 dan Kw 1x10^-14

kh = kw/ka
kh = 10-14/2×10^-5
kh = 5 × 10^-10

oh- = akar 5×10^-10.0,5
oh- = 5 × 10^-5,5
poh = 5,5-log10^-5
ph = 8,5 + log10^-5