Câu 4
\[\begin{array}{l}
C{H_3}COONa + NaOH \to C{H_4} + N{a_2}C{O_3}\\
2C{H_4} \to {C_2}{H_2} + 3{H_2}\\
{C_2}{H_2} + {H_2} \to {C_2}{H_4}\\
{C_2}{H_2} + 2{H_2} \to {C_2}{H_6}\\
n{C_2}{H_4} \to ({C_2}{H_4})n
\end{array}\]
Câu 5
\[\begin{array}{l}
2C{H_4} \to {C_2}{H_2} + 3{H_2}\\
{C_2}{H_2} + HCl \to {C_2}{H_3}Cl\\
{C_2}{H_2} + {H_2} \to {C_2}{H_4}\\
{C_2}{H_4} + {H_2}O \to {C_2}{H_5}OH\\
n({C_2}{H_3}Cl) \to ( - C{H_2}CHCl - )n
\end{array}\]
