Regarding the physical chemistry of minimum boiling azeotropes, which of the following thermodynamic — Solutions and Colligative Properties Chemistry Question

💡 Solution & Explanation

Minimum boiling azeotropes arise from large positive deviations (A), meaning A-B interactions are weak, pushing vapor pressure up. Thus, the total vapour pressure is higher than pure components (D), and consequently, the temperature needed to reach atmospheric pressure (boiling point) is lower than both pure components (B). Positive deviations usually feature endothermic mixing ($\Delta H_{mix} > 0$), making C false.