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aaapuk
@aaapuk
August 2022
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Помогите пожалуйста (((((((
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absyrdniypoet
2. 1) Si + O2 -> SiO2
SiO2 + Na2CO3 -> Na2SiO3 + CO2
Na2SiO3 + 2HCl -> H2SiO3 + 2NaCl
H2SiO3 -> SiO2 + H2O
2) Si + 2Mg -> Mg2Si
Mg2Si + 4HCl -> 2MgCl2 + SiH4
SiH4 + 2O2 -> SiO2 + 2H2O
3) CaCO3 -> CaO + CO2
CO2 + NaOH -> NaHCO3
NaHCO3 + NaOH -> Na2CO3 + H2O
3. CaCO3 -> CaO + CO2
n(CaCO3)= 200/100=2моль
n(CO2)=2моль
V(CO2)=2*22,4=44,8л
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Answers & Comments
SiO2 + Na2CO3 -> Na2SiO3 + CO2
Na2SiO3 + 2HCl -> H2SiO3 + 2NaCl
H2SiO3 -> SiO2 + H2O
2) Si + 2Mg -> Mg2Si
Mg2Si + 4HCl -> 2MgCl2 + SiH4
SiH4 + 2O2 -> SiO2 + 2H2O
3) CaCO3 -> CaO + CO2
CO2 + NaOH -> NaHCO3
NaHCO3 + NaOH -> Na2CO3 + H2O
3. CaCO3 -> CaO + CO2
n(CaCO3)= 200/100=2моль
n(CO2)=2моль
V(CO2)=2*22,4=44,8л