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mashaFCB
@mashaFCB
August 2022
1
4
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Помогите очень срочно
а)CO2-Na2CO3-CaCO3-CaO-CaCO3
б)ZnO-ZnSO4-Zn(OH)2-ZnSO4-ZnCl2
в)Na2SO3-SO2-H2SO3-Na2SO3-CaSO3
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Answers & Comments
leyla154
A) CO2+2NaOH=Na2CO3+H2O
Na2CO3+CaCl2=CaCO3+2NaCl
CaCO3=CaO+CO2
CaO+CO2=CaCO3
б) ZnO+H2SO4=ZnSO4+H2O
ZnSO4+2NaOH=Zn(OH)2+Na2SO4
Zn(OH)2+H2SO4=ZnSO4+2H2O
ZnSO4+BaCl2=ZnCl2+BaSO4
в) Na2SO3+2HCl=2NaCl+SO2+H2O
SO2+H2O=H2SO3
H2SO3+2NaOH=Na2SO3+2H2O
Na2SO3+CaCl2=CaSO3+2NaCl
2 votes
Thanks 3
mashaFCB
Спасибо большое
leyla154
не за что
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Answers & Comments
Na2CO3+CaCl2=CaCO3+2NaCl
CaCO3=CaO+CO2
CaO+CO2=CaCO3
б) ZnO+H2SO4=ZnSO4+H2O
ZnSO4+2NaOH=Zn(OH)2+Na2SO4
Zn(OH)2+H2SO4=ZnSO4+2H2O
ZnSO4+BaCl2=ZnCl2+BaSO4
в) Na2SO3+2HCl=2NaCl+SO2+H2O
SO2+H2O=H2SO3
H2SO3+2NaOH=Na2SO3+2H2O
Na2SO3+CaCl2=CaSO3+2NaCl