Which of the following thermodynamic state functions is strictly less than zero (negative) during th — Solutions and Colligative Properties Chemistry Question
Question
Which of the following thermodynamic state functions is strictly less than zero (negative) during the spontaneous formation of an ideal binary solution at constant temperature and pressure?
Answer: B
💡 Solution & Explanation
For an ideal solution, $\Delta H_{mix} = 0$ and $\Delta V_{mix} = 0$. Because mixing is a spontaneous process that increases randomness, $\Delta S_{mix} > 0$ and the Gibbs free energy $\Delta G_{mix} < 0$.
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