1)
CaC2 + 2H2O = Ca(OH)2 + C2H2
3C2H2 => C6H6
C6H6 + C2H5Cl => C6H5-C2H5 + HCl
C6H5-C2H5 + Br2 = C6H5CHBr CH3 + HBr
C6H5CHBr CH3 + NaOH => C6H5CH(OH)CH3 + NaBr
C6H5CH(OH)CH3 => C6H5CH=CH2 + H2O
nC6H5CH=CH2=> (-CH(C6H5)-CH2-)n
2)
CO + 2H2 = CH3OH
2CH3OH + 2Na =>2 CH3ONa + H2
CH3ONa + H2O => CH3OH + NaOH
CH3OH + HBr => CH3Br + H2O
2CH3Br + 2Na => C2H6 + 2NaBr
C2H6 => C2H4 + H2
2C2H4
+ O2 =>2 CH3COH