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n= 0,02x 50
n= 1
M = n/ (vKOH+vCH3COOH)
M = 1/ (50+50)
M= 1/100
M= 10^-2
[OH]= akar (kw/ka) . M
= akar (10^-14/10^-5) .10^-2
= akar 10^-11
= 10^-5,5
POH= -log 10^-5,5
POH=5,5
PH = Pkw-POH
= 14-5,5
=8,5