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Sambik11
@Sambik11
July 2022
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помогите пожалуйстаномер 3
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innysik51511
A)
Ca + O = CaO
CaO + H2O = Ca(OH)
2
Ca(OH)2 + 2 HNO3 = Ca(NO3)2 + 2 H2O
Ca(NO3)2 + H2SO4 = CaSO4 + 2 HNO
3
б)
C + O2 = CO
2
CO2 + Na2O = Na2CO
3
Na2CO3 + SiO2 =Na2SiO3 + CO
2
CO2 + CaO = CaCO
3
в)
Fe2(SO4)3 + 6 KOH = 2 Fe(OH)3 + 3 K2SO
4
2 Fe(OH)3 = Fe2O3 + 3 H2O
Fe2O3 + 3H2SO4 =Fe2(SO4)3 + 3H2O
г)
4 P + 5 O2 = 2 P2O
5
P2O5 + 3H2O = 2H3PO
4
2 H3PO4 + 3 CaO = Ca3(PO4)2 + 3 H2O
Ca3(PO4)2 + 3H2SO4 = 2H3PO4 + 3CaSO4
Ca3(PO4)2 + 4H3PO4 = 3Ca(H2PO4)
2
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Answers & Comments
CaO + H2O = Ca(OH)2
Ca(OH)2 + 2 HNO3 = Ca(NO3)2 + 2 H2O
Ca(NO3)2 + H2SO4 = CaSO4 + 2 HNO3
б)C + O2 = CO2
CO2 + Na2O = Na2CO3
Na2CO3 + SiO2 =Na2SiO3 + CO2
CO2 + CaO = CaCO3
в)Fe2(SO4)3 + 6 KOH = 2 Fe(OH)3 + 3 K2SO4
2 Fe(OH)3 = Fe2O3 + 3 H2O
Fe2O3 + 3H2SO4 =Fe2(SO4)3 + 3H2O
г)4 P + 5 O2 = 2 P2O5
P2O5 + 3H2O = 2H3PO4
2 H3PO4 + 3 CaO = Ca3(PO4)2 + 3 H2O
Ca3(PO4)2 + 3H2SO4 = 2H3PO4 + 3CaSO4
Ca3(PO4)2 + 4H3PO4 = 3Ca(H2PO4)2