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NastyaZayka
@NastyaZayka
July 2022
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Составьте уравнения химической реакции для осуществления превращений по схемам
Na-Na2O-NaOH-Na2CO3-CaCO3
Fe-FeO-FeCl2-Fe (OH)2-FeO-Fe-FeSO4
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svetka1574
Verified answer
1) 4Na + O2 -> 2Na2O
Na2O + H2O -> 2NaOH
2NaOH + CO2 -> Na2CO3 + H2O
Na2CO3 + CaCl2 -> CaCO3 + 2NaCl
2) 2Fe + O2 -> 2FeO
FeO + 2HCl -> FeCl2 + H2O
FeCl2 + 2NaOH -> Fe(OH)2 + 2NaCl
Fe(OH)2 -> FeO + H2O
3FeO + 2Al -> Al2O3 + 3Fe
Fe + H2SO4 -> FeSO4 + H2
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Mankeysy
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Решение находится на фото
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Answers & Comments
Verified answer
1) 4Na + O2 -> 2Na2ONa2O + H2O -> 2NaOH
2NaOH + CO2 -> Na2CO3 + H2O
Na2CO3 + CaCl2 -> CaCO3 + 2NaCl
2) 2Fe + O2 -> 2FeO
FeO + 2HCl -> FeCl2 + H2O
FeCl2 + 2NaOH -> Fe(OH)2 + 2NaCl
Fe(OH)2 -> FeO + H2O
3FeO + 2Al -> Al2O3 + 3Fe
Fe + H2SO4 -> FeSO4 + H2
Verified answer
Решение находится на фото