Решить цепочку
CH4 → CH3CL → CH3-CH3 → CH2=CH2 → C2H4CL → CH≡CH →CH3COH

1) CH4+Cl2=CH3Cl+HCl

2) 2CH3Cl+2Na=CH3-CH3+2NaCl

3) CH3-CH3+Br2=CH3CH2Br+HBr

4) 2CH3-CH2Br+2Na=CH3-CH2-CH2-CH3+2NaBr