Напишите уравнение реакций следующих превращений ch3-ch=ch2+-ch2-ch3+-ch(br)-ch3+-ch(ch3)-ch(ch3)-ch3+

1. CH3-CH=CH2 + H2 = CH3-CH2-CH3
2. CH3-CH2-CH3 + Br2 = CH3-CH(Br)-CH3 + HCL
3. 2CH3-CH(Br)-CH3 + 2Na = CH3-CH(CH3)-CH(CH3)-CH3 +2 NaCl
4. 2CH3-CH(CH3)-CH(CH3)-CH3 + 19O2 = 12CO2 + 14H2O