CH3-CH3+Cl2 + CH3-CH2Cl+HCl 2CH3-CH2Cl+2Na=2NaCl+C4H10 CH3-CH2-CH2-CH3+ Br2=CH3-CHBr-CH2=CH3+HBr CH3-CHBr-CH2-CH3+ NaOH= CH3-CH=CH-CH3+NaCl+H2O CH3-CH=CH-CH3+HOH= CH3-CH2-CHOH-CH3.