Lời giải của Tự Học 365

$\begin{align}{{C}_{6}}{{H}_{4}}{{\left( COO \right)}_{2}}{{C}_{2}}{{H}_{4}}+\text{ }2NaOH\xrightarrow{{{H}_{2}}O,{{t}^{0}}}NaOOC{{C}_{6}}{{H}_{4}}COONa+\text{ }HOC{{H}_{2}}C{{H}_{2}}OH \\\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,({{X}_{1}})\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,({{X}_{2}}) \\ \end{align}$

$\begin{array}{l} NaOOC{C_6}{H_4}COONa + {\rm{ }}HCl{\rm{ }} \to HOOC{C_6}{H_4}COOH + {\rm{ }}2NaCl\\ \,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,\,({X_3}) \end{array}$

$nHOOC{{C}_{6}}{{H}_{4}}COOH+\text{ }nHOC{{H}_{2}}C{{H}_{2}}OH\xrightarrow{{{t}^{0}}}poli\left( etilen-terephtalat \right)\text{ }+\text{ }2n{{H}_{2}}O$

X₁ có nhiệt độ nóng chảy cao hơn X₃ => A sai

X₁ có tổng số nguyên tử H bằng  4 => B sai

X₂ có 2 nhóm OH => X₂ hòa tan được Cu(OH)₂ => C sai

Đáp án cần chọn là: d