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= 5 / 100 = 0,05 / 5.10^2
OH- =
=
=
= 7.10^6
POH = - Log OH-
= - log 7.10^6
= 6 - log 7
pH = 14 - poh
= 14 - (6 - log 7)
= 8 + log 7
5 5
5 5 5
--------------------------------------------------
- - 5
Mg=n/v=5/(50+50)=5/100=5.10^-2
OH^-=AKAR KW/KA.Mg
=akar 10^-14/10^-5.5.10^-2
=akar 10^-9.5.10^-2
=akar 5.10^-11
=akar 0,5.10^-10=akar0,5.10^-5
POH=5-LOG akar 0,5
PH=14-POH=9+LOGAKAR 0,5
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