Zn→ZnO→ZnCl2→Zn(OH)2→ZnO→Zn
Zn+CO → ZnO+C
ZnO+2HCl → ZnCl2+H2O
ZnCl2+2NaOH → Zn(OH)2+2NaCl
Zn(OH)2 → ZnO+H2O
ZnO+C → Zn+CO
CH4→C2H2→CH3CHO→C2H5OH→C2H4
2CH4 → C2H2+3H2
C2H2+H2O → CH3CHO
CH3CHO+H2 → C2H5OH
C2H5OH → C2H4+H2O
Zn→ZnO→ZnCl2→Zn(OH)2→ZnO→Zn
Zn+CO → ZnO+C
ZnO+2HCl → ZnCl2+H2O
ZnCl2+2NaOH → Zn(OH)2+2NaCl
Zn(OH)2 → ZnO+H2O
ZnO+C → Zn+CO
CH4→C2H2→CH3CHO→C2H5OH→C2H4
2CH4 → C2H2+3H2
C2H2+H2O → CH3CHO
CH3CHO+H2 → C2H5OH
C2H5OH → C2H4+H2O