Question

c→c2h4→c2h6→co2→caco3→cao→ca(oh)2

Answer 1

1) 2C+2H2=C2H4

2) C2H4+H2=C2H6

3) 2C2H6+7O2=4CO2+6H2O

4) CO2+Ca(OH)2=CaCO3+H2O

5) CaCO3=CaO+CO2

6) CaO+H2O=Ca(OH)2