campuran yang terdiri dari 10 ml larutan asam asetat 0,1 M dan 5 ml larutan naoh 0,1M memiliki pH?

CH3COOH + NaOH → CH3COONa + H2O

→ CH3COOH
m : 1mmol
r : 0,5mmol
s = 1 - 0,5 = 0,5mmol

→ NaOH
m : 0,5mmol
r : 0,5mmol
s = 0,5 - 0,5 = 0

→ CH3COONa
m : -
r : 0,5mmol
s = 0,5mmol

→ H2O
m : -
r : 0,5mmol
s = 0,5mmol

[H+] = Ka x (sisa garam / mmol garam)
[H+] = 10^-5 (0,5mmol / 0,5mmol)
[H+] = 10^-5

pH = -log [H+]
pH = -log10^-5
pH = 5 - log1
pH = 5 - 0
pH = 5