1) CH3-CH=CH2 + HBr === CH3-CH(Br)-CH3
CH3-CH(Br)-CH3 + KOH (спиртовый растовр) ===CH3-CH=CH2 + KBr+H2O
nCH3-CH=CH2 === (-CH(CH3)-CH2-)n
2) CH2=CH2 + HCl === CH3-CH2Cl
2CH3-CH2Cl + 2Na === CH3-CH2-CH2-CH3 + 2NaCl
CH3-CH2-CH2-CH3 + Br2 ==солн.свет== СH3-CH2-CH(Br)-CH3 + HBr