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asdfg1109a
@asdfg1109a
July 2022
1
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c-ch4-co2-x-ca(hco3)2-co2
s-h2s-so2-x-h2so4-Y
nh4cl-nh3-x-no2-hno3-Y
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Технец
1)
1. C + 2H2 -> CH4
2. CH4 + 2O2 -> CO2 + 2H2O
3. CO2 + Ca(OH)2 -> CaCO3 + H2O
4. CaCO3 + CO2 + H2O -> Ca(HCO3)2
5. Ca(HCO3)2 -> CaCO3 + CO2 + H2O
2)
1. S + H2 -> H2S
2. 2H2S + 3O2 -> 2SO2 + 2H2O
3. 2SO2 + O2 -> 2SO3
4. SO3 + H2O -> H2SO4
5. H2SO4 + CaO -> CaSO4 + H2O
3)
1. NH4Cl + NaOH -> NH3 + H2O + NaCl
2. 4NH3 + 5O2 -> 4NO + 6H2O
N[-3] - 5e -> N[+2] | 4 окисляется, восстановитель
O2[0] + 4e -> 2O[-2] | 5 восстанавливается, окислитель
3. 2NO + O2 -> 2NO2
4. 2NO2 + H2O -> HNO3 + HNO2
5. HNO3 + NaOH -> NaNO3 + H2O
Прошу вас.
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Answers & Comments
1. C + 2H2 -> CH4
2. CH4 + 2O2 -> CO2 + 2H2O
3. CO2 + Ca(OH)2 -> CaCO3 + H2O
4. CaCO3 + CO2 + H2O -> Ca(HCO3)2
5. Ca(HCO3)2 -> CaCO3 + CO2 + H2O
2)
1. S + H2 -> H2S
2. 2H2S + 3O2 -> 2SO2 + 2H2O
3. 2SO2 + O2 -> 2SO3
4. SO3 + H2O -> H2SO4
5. H2SO4 + CaO -> CaSO4 + H2O
3)
1. NH4Cl + NaOH -> NH3 + H2O + NaCl
2. 4NH3 + 5O2 -> 4NO + 6H2O
N[-3] - 5e -> N[+2] | 4 окисляется, восстановитель
O2[0] + 4e -> 2O[-2] | 5 восстанавливается, окислитель
3. 2NO + O2 -> 2NO2
4. 2NO2 + H2O -> HNO3 + HNO2
5. HNO3 + NaOH -> NaNO3 + H2O
Прошу вас.