Thực hiện sơ đồ phản ứng (đúng với tỉ lệ mol các chất) sau:(1) X + 2NaOH

* Hướng dẫn giải

Chọn C

$$\begin{gathered} \left(1\right)C_6{H}_4{\left(COON{H}_3\right)}_2+2NaOH\stackrel{t^0}{\to }{C}_6{H}_4{\left(COONa\right)}_2+N{H}_2{\left(C{H}_2\right)}_{6}N{H}_2 \\ \left(X_1\right) \left(X_2\right) \end{gathered}$$

$$\begin{gathered} \left(2\right)C_6{H}_4{\left(COONa\right)}_2+H_{2}S{O}_4\to C_6{H}_4{\left(COOH\right)}_2+N{a}_{2}S{O}_4 \\ \left(X_1\right) \left(X_3\right) \end{gathered}$$

$$\begin{gathered} \left(3\right)nHOOC{\left(C{H}_2\right)}_{4}COOH+nN{H}_2{\left(C{H}_2\right)}_{9}N{H}_2\stackrel{t^0}{\to }{\left(-OC{\left(C{H}_2\right)}_{6}CONH{\left(C{H}_2\right)}_{6}NH-\right)}_n+2n{H}_{2}O \\ \left(X_4\right) \left(X_2\right) nilon-6,6 \end{gathered}$$

$$\begin{gathered} \left(4\right)n{C}_6{H}_4{\left(COOH\right)}_2+n{C}_2{H}_4{\left(OH\right)}_2\stackrel{t^0}{\to }{\left(-OC{C}_6{H}_{4}COO{C}_2{H}_4{C}_2{H}_{4}O-\right)}_n+n{H}_{2}O \\ \left(X_3\right) \left(X_5\right) Tơ lapsan \end{gathered}$$