1) C6H6+Cl2=C6H5Cl+HCl
2) C6H6+HNO3=C6H5NO2+H2O
3) CH2=CH2+H2 = CH3-CH3
4) CH4+Br2=CH3Br+HBr
5) CH4+2O2=CO2+2H2O
6) NaOH+CH3COOH = CH3COONa+H2P
7) CaC2+2H2O=Ca(OH)2+HC≡CH
8) 2C2H5OH+2Na=2C2H5ONa+H2
9) C6H5OH+3Br2=C6H2(Br)3OH+3HBr
10) C6H12O6 = 2C2H5OH+2CO2
11) CH2-OH CH2-O-C(O)-R
CH-OH + 3HO-C(O)-R = CH-O-C(O)-R +3H2O
CH2-OH CH2-O-C(O)-R
12) C6H12O6+6O2=6CO2+6H2O