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s (3s)^3
s= akar 4 ksp/27
akar 4 27.10^-16/27=10^-4
POH = - log (OH)=4
pH =14-POH=14-4=10
mudah2an bner.maklumin y klo salah
trus cari s-nya...
Ksp =
=
trus dicoret 2,7 dan 27nya jadinya...
=
s =
s =
jadi konsentrasi dari [OH-] =
nah cari pHnya dah....
x adalah byknya ion [OH-]
[OH-] = x . M
= 3 .
=
pOH = - log
= 4 - log 3
pH = 14 - (4 - log 3)
= 10 + log 3
~SELESAI~