Ответ:
1.Fe+O2=Fe203
2.Fe203+NaOH=Fe(ON)3+Na20
3.Fe(ON)3+H2SO4=Fe2(SO4)3+H20
4.Fe2(SO4)3+HCI=FeCI3+H3SO4
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Ответ:
1.Fe+O2=Fe203
2.Fe203+NaOH=Fe(ON)3+Na20
3.Fe(ON)3+H2SO4=Fe2(SO4)3+H20
4.Fe2(SO4)3+HCI=FeCI3+H3SO4