№2 Дописать УР:
NaOH + HNO3=
Fe(OH)2 + H2SO4=
Cu(NO3)2+KOH=
Fe(OH)2=
MgSO4+NaOH=
Al2(SO4)2 + NaOH=
NaOH + HNO3=
Fe(OH)2 + H2SO4=
Cu(NO3)2+KOH=
Fe(OH)2=
MgSO4+NaOH=
Al2(SO4)2 + NaOH=
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Answers & Comments
2Fe(OH)3+3H2SO4=Fe2(SO4)3+6H2O
Cu(NO3)2+2KOH=Cu(OH)2 ↓+ 2KNO3
Fe(OH)2= FeO + H2O
MgSO4+2NaOH=Mg(OH)2↓ + Na2SO4
Al2(SO4)2 + 6NaOH=2Al(OH)3 + 3Na2SO4
или
Al2(SO4)3+8NAOH =2Na[Al(OH)4] +3Na2SO4