Bạn xem lại chỗ 7 nha mình nghĩ là C6H5Cl
\(\begin{array}{l}
2C{H_4} \to {C_2}{H_2} + 3{H_2}\\
{C_2}{H_2} + {H_2} \to {C_2}{H_4}\\
{C_2}{H_4} + HCl \to {C_2}{H_5}Cl\\
{C_2}{H_5}Cl + KOH \to {C_2}{H_4} + KCl + {H_2}O\\
{C_2}{H_5}Cl + NaOH \to {C_2}{H_5}OH + NaCl\\
3{C_2}{H_2} \to {C_6}{H_6}\\
{C_6}{H_6} + C{l_2} \to {C_6}{H_5}Cl + HCl\\
{C_6}{H_5}Cl + NaOH \to {C_6}{H_5}OH + NaCl
\end{array}\)
