Ответ:
Объяснение:
1) 2ZnS + 3O2 = 2ZnO + 2SO2
ZnO + 2HCl = ZnCl2 + H2O
ZnCl2 + 2NaOH = Zn(OH)2↓ + 2NaCl
Zn(OH)2= ZnO + H2O
ZnO + H2 = Zn + H2O
2) S + H2 = H2S
Mg + S = MgS
H2S + MgO = MgS + H2O
2MgS + 3O2 = 2MgO + 2SO2
2SO2 + O2 = 2SO3
SO3 + H2O = H2SO4
H2SO4 + BaCl2 = BaSO4↓ + 2HCl
SO3 + BaO = BaSO4
3) 4P + 5O2 = 2P2O5
P2O5 + 3H2O = 2H3PO4
P2O5 + 3Na2O = 2Na3PO4
H3PO4 + 3NaOH = Na3PO4 + 3H2O
2Na3PO4 + 3CaCl2 = Ca3(PO4)2 + 6NaCl
Ca3(PO4)2 -> 3CaO + P2O5
CaO + H2O = Ca(OH)2
Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O
2ZnS + 3O2 = 2ZnO + 2SO2
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Answers & Comments
Ответ:
Объяснение:
1) 2ZnS + 3O2 = 2ZnO + 2SO2
ZnO + 2HCl = ZnCl2 + H2O
ZnCl2 + 2NaOH = Zn(OH)2↓ + 2NaCl
Zn(OH)2= ZnO + H2O
ZnO + H2 = Zn + H2O
2) S + H2 = H2S
Mg + S = MgS
H2S + MgO = MgS + H2O
2MgS + 3O2 = 2MgO + 2SO2
2SO2 + O2 = 2SO3
SO3 + H2O = H2SO4
H2SO4 + BaCl2 = BaSO4↓ + 2HCl
SO3 + BaO = BaSO4
3) 4P + 5O2 = 2P2O5
P2O5 + 3H2O = 2H3PO4
P2O5 + 3Na2O = 2Na3PO4
H3PO4 + 3NaOH = Na3PO4 + 3H2O
2Na3PO4 + 3CaCl2 = Ca3(PO4)2 + 6NaCl
Ca3(PO4)2 -> 3CaO + P2O5
CaO + H2O = Ca(OH)2
Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O
Ответ:
2ZnS + 3O2 = 2ZnO + 2SO2
ZnO + 2HCl = ZnCl2 + H2O
ZnCl2 + 2NaOH = Zn(OH)2↓ + 2NaCl
Zn(OH)2= ZnO + H2O
ZnO + H2 = Zn + H2O
Объяснение: