fe2 so4 3��naoh
Fe2(SO4)3NaOHӦʲô
ɺɫFe(OH)3ɻFe2O3ҲҪɷ֣ҽṹˮĸʴ
ƽлѧʽFe2(SO4)3+NaOH - - - Na2SO4+Fe(OH)3...
Fe2(SO4)3 + 6NaOH = 3Na2SO4 + 2Fe(OH)3ɫҺеƺ,ɺɫ.
fe2(so4)3naohӦ
ҺFe3+OH-ӷӦFe(OH)3ɫѧʽ:Fe2(SO4)3+6NaOH==2Fe(oh)3+3Na2so4 ӷʽ:Fe3++3oh-==Fe(oh)3 ...
Fe2(SO4)3NaOHӦдѧʽ
Fe2(SO4)3+6NaOH===2Fe(OH)3+3Na2SO4
Fe2{SO4}3ƵĻѧʽ
Fe2(SO4)3+6NaOH==2Fe(OH)3+3Na2SO4 ɺɫ
ʱfe2(so4)3ҺеμnaohҺ,Ҫʹ...
ʹFe3+ȫ,ʣŨҪС10^-5:c(OH-)= (Ksp / 10^-5 )^1/3 = (1*10-38 / 10^-5 )^1/3 = 1*10-11pH = 11
Fe2(so4)3naohӷʽ
Fe3+ +3OH-==FeOH3
...ӷʽFe2(SO4)3ҺмNaOH...
Fe3+ +3OH-=Fe(OH)3Fe(OH)3+3H+=Fe3+ +3H2O