Make up the reaction equation: SO2- SO3- H2SO4, Fe3O4- Fe- FeCl3- Fe (OH) 3- Fe2O3Pb (NO3) 2- PbSO4- PbS

| April 29, 2021 | education

№1.

2SO2  + O2  = 2SO3.

SO3 + H2O = H2 SO4.

Fe2O3  + 2Al = Al2O3  + 2Fe

№2.

2Fe + 3Сl2 = 2FeСl3.

FeСl3  + 3NaOH = Fe(OH)3 + 3NaCl.

2Fe(OH)3 = Fe2O3  + 3H2O.

2SO2  + O2  = 2SO3

SO3 + H2O = H2 SO4.

Fe2O3  + 2Al = Al2O3  + 2Fe;

2Fe + 3 Сl2 = 2 FeСl3.

FeСl3  + 3NaOH = Fe(OH)3 + 3NaCl.

2Fe(OH)3 = Fe2O3  + 3H2O.

№3.

Pb(NO3)2  + BaSO4 = Ba(NO3)2  + PbSO4.

PbSO4 + H2S = PbS + H2SO4.



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