Given the following table of thermodynamic data, complete the following sentence. The vaporization of TiCl₄ is __________.

Question

Quizplus · Accepted Answer

According to the table, the entropy change (ΔS) is positive, indicating an increase in disorder, and the enthalpy change (ΔH) is positive, indicating an endothermic process. The spontaneity of the vaporization process is determined by the Gibbs free energy change (ΔG). ΔG = ΔH - TΔS. At low temperature (T), the positive ΔH term dominates, making the process nonspontaneous. However, at high temperature, the negative TΔS term dominates, making the process spontaneous. Therefore, the correct answer is C, nonspontaneous at low temperature and spontaneous at high temperature.

Given the Following Table of Thermodynamic Data, Complete the Following