Verified answer

Ответ:

2С2H5OH [T, кат] = CH2=CH-CH=CH2 + 2H2O + H2  

CH2=CH-CH=CH2 + 2H2 [Kat] = CH3-CH2-CH2-CH3

CH3-CH2-CH2-CH3 + Br2 [uf] = CH3-CH(Br)-CH2-CH3 + HBr

CH3-CH(Br)-CH2-CH3 + KOH [C2H5OH] = KBr + CH3-CH=CH-CH3 + H2O

5CH3-CH=CH-CH3 + 8KMnO4 + 12H2SO4 = 10CH3COOH + 4K2SO4 + 8MnSO4 + 12H2O