1) FeSO4 + 2NaOH = Fe(OH)2+Na2SO4
Fe"2+" + SO4"2-" + 2Na"+" + 2OH "-" = Fe(OH)2 + 2Na"+" + SO4"2-"
Fe"2+" +2 OH "-" = Fe(OH)2
2) FeCL3 + 3NaOH =Fe(OH)3 + 3NaCl
Fe"3+" + 3Cl"-" + 3Na"+" + 3 OH"-" = Fe(OH)3 + 3Na"+" + 3Cl"-"
Fe"3+" + 3 OH"-" = Fe(OH)3
3) CuSO4+Ba(NO3)2 = Cu(NO3)2+ BaSO4
Cu"2+" + SO4"2-"+Ba"2+" + 2NO3"-"=Cu"2+" + 2NO3"-" + BaSO4
SO4"2-" + Ba"2+" = BaSO4
4) ZnCL2 + 2NaOH = Zn(OH)2+ 2NaCl
Zn"2+" + 2Cl"-" + 2Na"+" + 2OH"-"= Zn(OH)2+2Na"+"+ 2Cl"-"
Zn"2+" + 2OH"-"= Zn(OH)2
5) CuSO4+2NaOH =Cu(OH)2+Na2SO4
Cu"2+" + SO4"2-" +2Na"+"+2OH"-"=Cu(OH)2+2Na"+"+SO4"2-"
Cu"2+" + 2OH"-"=Cu(OH)2
P.S. То, что написано в кавычках-пишется в верхнем индексе.Удачи!
1. CH3-CH2-CH3 -> CH2=CH-CH3 + H2
2. 2CH2=CH-CH3 + 9O2 -> 6CO2 + 6H2O
2)
1. CH3-CH2-CH2-CH3 + Cl2 -> CH3-CH2-CH2-CH2Cl + HCl
2. 2CH3-CH2-CH2-CH2Cl + 2Na -> CH3-(CH2)6-CH3 + 2NaCl
3. CH3-(CH2)6-CH3 + HNO3(12-ый р-р) -120градусов-> CH3-(CH2)6-CH2NO2 + H2O
3)
1. CH3-CH3 -> CH2=CH2 + H2
2. CH2=CH2 + 3O2 -> 2CO2 + 2H2O
4)
1. CH2=CH-CH3 -> CH4 (без понятия)
2. CH4 + Cl2 -hv-> CH3Cl + HCl
3. 2CH3Cl + 2Na -> CH3-CH3 + 2NaCl
4. CH3-CH3 + HNO3(12-ый р-р) -120градусов-> CH3-CH2NO2 + H2O
Вот так.