Question

Viết phương trình hóa học theo sơ đồ chuyển hóa (ghi rõ điều kiền phản ứng, nếu có): a) CaCO3, CaO, CaC2, C2H2, C2H4, C2H6, CO2, CO

b) C2H6, C2H5Cl, C2H4, C2H4Br2, C2H4(OH)2

c) Al, AlCl3, Al(OH)3, Al2O3Al4C3, CH4, C2H2, C6H6, C6H5CH3, C6H5COOK

Answer 1

: a) CaCO3, CaO, CaC2, C2H2, C2H4, C2H6, CO2, CO

=> CaCO3-->CaO+CO2

CaO+C-->CaC2+CO

CaC2+H2O-->Ca(OH)2+C2H2

C2H2+H2-->C2H4

C2H4+H2-->C2H6

C2H6+O2-->CO2+H2O

CO2+C-->CO

C)Al+Cl2-->AlCl3

AlCl3+NaoH-->Al(OH)3+NaCl

Al(OH)3-->Al2O3+H2O

Al2o3+C-->Al4C3+CO

Al4C3+H2O-->Al(OH)3+CH4

CH4+H2-->C2H2

Answer 2

a) CaCO3--to-->CaO+CO2

CaO+2C--->CaC+CO

2CaC+2H2O--->Ca(OH)2+C2H2

C2H2+H2--to->C2H4

C2H4+H2--->C2H6

C2H6+7/2O2-->2CO2+3H2O

CO2+C---to->2CO

b) C2H6+Cl2-->C2H5Cl+HCl

C2H5Cl-->C2H4+HCl

C2H4+Br2--->C2H4Br2

C2H4Br+2NaOH-->C2H4(OH)2+2NaBr

c) 2Al+6HCl-->AlCl3+3H2

AlCl3+3NaOH-->Al(OH)3+3NaCl

2Al(OH)3-->Al2O3+3H2O

2Al2O3+9C--->Al4C3+6CO

Al4C3+12H2O--->3CH4+4Al(OH)3

2CH4-->C2H2+3H2

3C2H2-->C6H6

C6H6+CH3Cl--->C6H5CH3+HCl

C6H5CH3+2KMnO4--->H2O+KOH+2MnO2+C6H5COOK

Answer 3

: a) CaCO3, CaO, CaC2, C2H2, C2H4, C2H6, CO2, CO

=> CaCO3-->CaO+CO2

CaO+C-->CaC2+CO

CaC2+H2O-->Ca(OH)2+C2H2

C2H2+H2-->C2H4

C2H4+H2-->C2H6

C2H6+O2-->CO2+H2O

CO2+C-->CO

C)Al+Cl2-->AlCl3

AlCl3+NaoH-->Al(OH)3+NaCl

Al(OH)3-->Al2O3+H2O

Al2o3+C-->Al4C3+CO

Al4C3+H2O-->Al(OH)3+CH4

CH4+H2-->C2H2