Срочно!
Осуществите превращения:
a) CH4 --> CH3CL --> CH3 - CH3 -->CH3 = CH2
b) CH3 - CH3 --> CH3 - CH2-CL --> CH3 - CH2 - CH2 - CH3 --> CO2

a) CH4 + Cl2 → CH3Cl + HCl.

2CH3Cl + 2Na → CH3-CH3 + 2NaCl.

CH3-CH3 → CH2=CH2 + H2.

b) CH3-CH3 + Cl2 → CH3-CH2Cl.

2CH3-CH2Cl + 2Na → CH3-CH2-CH2-CH3 + 2NaCl.

2CH3-CH2-CH2-CH3 + 13O2 → 8CO2 + 10H2O.