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1. CO2 + Ca(OH)2 (1:1) --->CaCO3+H2O
2.CO2 +2NaOH (1:2) ---->Na2CO3+H2O
3.SiO2 +2 Mg --->Si+2MgO
4.Ca(HCO3)2 + 2HCl --->CaCl2+2H2O+2CO2
a,
\(CH_3COONa+NaOH\underrightarrow{^{CaO,to}}CH_4+Na_2CO_3\)
\(2CH_4\underrightarrow{^{1500oC}}C_2H_2+3H_2\)
\(2C_2H_2\underrightarrow{^{to,xt}}C_6H_6\)
b,
\(C_4H_{10}\underrightarrow{^{to,xt}}C_2H_6+C_2H_4\)
\(C_2H_6+Cl_2\rightarrow C_3H_5OH+HCl\)
\(C_2H_5Cl+NaOH\rightarrow C_2H_5OH+NaCl\)
\(C_2H_5OH\underrightarrow{^{to}}C_2H_4+H_2O\)
\(nC_2H_4\underrightarrow{^{to,xt}}\left(C_2H_4\right)_n\)
\(C_2H_6\underrightarrow{^{to,xt}}C_2H_4+H_2\)
\(C_2H_4+H_2O\underrightarrow{^{H^+}}C_2H_5OH\)
\(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)
c,
\(CH_3COONa+NaOH\underrightarrow{^{CaO,to}}CH_4+Na_2CO_3\)
\(2CH_4\underrightarrow{^{1500oC}}C_2H_2+3H_2\)
\(C_2H_2+H_2\underrightarrow{^{Pd,to}}C_2H_4\)
\(C_2H_4+H_2O\underrightarrow{^{H^+}}C_2H_5OH\)
1)
HCOOH\(\underrightarrow{^{to}}\)CO+ H2O
CO+\(\frac{1}{2}\)O2\(\underrightarrow{^{to}}\) CO2
CO2+ C\(\underrightarrow{^{to}}\) 2CO
CO+ FeO\(\underrightarrow{^{to}}\) Fe+ CO2
2)
CaCO3\(\underrightarrow{^{to}}\) CaO+ CO2
CO2+ NaOH \(\rightarrow\) NaHCO3
2NaHCO3 \(\underrightarrow{^{to}}\) Na2CO3+ CO2+ H2O
Na2CO3+ 2HCl \(\rightarrow\) 2NaCl+ CO2+ H2O
3)
SiF4+ 2Mg\(\underrightarrow{^{to}}\) Si+ 2MgF2
Si+ O2 \(\underrightarrow{^{to}}\) SiO2
SiO2+ 2NaOH\(\underrightarrow{^{to}}\)Na2SiO3+ H2O
Na2SiO3+ 2HCl \(\rightarrow\) 2NaCl+ H2SiO3
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\(C+O_2\rightarrow CO_2\)
\(CO_2+2KOH\rightarrow K_2CO_3+H_2O\)
\(K_2CO_3+HCl\rightarrow KCl+CO_2+H_2O\)