Koliko puta je manja rastvorljivost gvozdje(III)-hidroksida u vodenom rastvoru pH=13,0 nego u cistoj vodi ako je proizvod rastvorljivosti gvozdje(III)-hidroksida 1,1 x 10 na -36.
S obzirom da je Ksp toliko niska, mozemo reci da je Kw/[H+]+3s=Kw/[H+]
Ksp=[Fe3+][OH-]3 = s*Kw3/[H+]3---> s=Ksp[H+]3/Kw3
s1/s2=([H+]1/[H+]2)3=1,0E-18
Pozdrav! :)
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it"Max Planck
A da li ovo zna da uradi
A da li ovo zna da uradi neko? Hvala!
Fe(OH)3 ---> Fe3+ + 3OH-
Fe(OH)3 ---> Fe3+ + 3OH-
s.....................s............Kw/[H+]+3s
S obzirom da je Ksp toliko niska, mozemo reci da je Kw/[H+]+3s=Kw/[H+]
Ksp=[Fe3+][OH-]3 = s*Kw3/[H+]3---> s=Ksp[H+]3/Kw3
s1/s2=([H+]1/[H+]2)3=1,0E-18
Pozdrav! :)
"A new scientific truth does not triumph by convincing opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it" Max Planck