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киска268
@киска268
November 2021
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Ca3 (Po4)2- P- x- H3PO4
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kekun4ick
1) Ca3(PO4)2 + 5C + 3SiO2 = 3CaSiO3 + 2P + 5CO↑
4P + 5O2 = 2P2O5
P2O5 + 3H2O (нагревание) = 2H3PO4
2) 10HNO3 (разб.) + 8Ag = 8AgNO3 + N2O↑ + 5H2O
2AgNO3 = 2Ag + 2NO2↑ + O2↑
C + O2 = CO2
3) K2SiO3 + H2SO4 = K2SO4 + H2SiO3↓
H2SiO3 (нагревание) = H2O + SiO2
SiO2 + 2C = 2CO↑ + Si
4) Fe2O3 + 3CO = 2Fe + 3CO2↑
2Fe + 6H2SO4(конц.) (нагревание) = Fe2(SO4)3 + 3SO2↑ + 6H2O
Fe2(SO4)3 + 6NaOH = 3Na2SO4 + 2Fe(OH)3↓
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киска268
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Answers & Comments
4P + 5O2 = 2P2O5
P2O5 + 3H2O (нагревание) = 2H3PO4
2) 10HNO3 (разб.) + 8Ag = 8AgNO3 + N2O↑ + 5H2O
2AgNO3 = 2Ag + 2NO2↑ + O2↑
C + O2 = CO2
3) K2SiO3 + H2SO4 = K2SO4 + H2SiO3↓
H2SiO3 (нагревание) = H2O + SiO2
SiO2 + 2C = 2CO↑ + Si
4) Fe2O3 + 3CO = 2Fe + 3CO2↑
2Fe + 6H2SO4(конц.) (нагревание) = Fe2(SO4)3 + 3SO2↑ + 6H2O
Fe2(SO4)3 + 6NaOH = 3Na2SO4 + 2Fe(OH)3↓