Verified answer

а)

СН₃-(СН₂)₄-СН₃ ⇒ С₆Н₁₂ + Н₂

С₆Н₁₂  => С₆Н₆ + 3Н₂

С₆Н₆ + Сl₂ => C₆H₅Cl + HCl

C₆H₅Cl + NaOH => C₆H₅OH + NaCl

б)

CaC₂ + 2HOH => C₂H₂ + Ca(OH)₂

3C₂H₂ => C₆H₆

C₆H₆ + Br₂ => C₆H₅Br + HBr

C₆H₅Br + KOH => C₆H₅OH + KBr

C₆H₅OH + H₂SO₄ => HO₃S-C₆H₄-OH + H₂O