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OH-=b.Mb=2.5.10^-4=10^-3,pOh=-log(OH-)=3,PH=14-POH=14-3=11
b.HCl---->H++Cl^-
H+=a.Ma=1.2.10^-2=2.10^-2,ph=2-log2
c.H+=Akar ka.ma=akar 10^-5.10^-1=akar 10^-6=10^-3,PH=3
d.OH-=Akar kb.Mb=akar 10^-5.10^-1==akar 10^-6=10^-3,poh=3,ph=14-3=11
e.H+=Akar ka.Ma=akar 81.10^-5.10^-1=akar 81.10^-6=9.10^-3,ph=3-log 9
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