A binary liquid mixture of components A and B strictly forms an ideal solution. The mathematically expected volume change on mixing () is defined as , and the expected absolute enthalpy change on mixi

Question

A binary liquid mixture of components A and B strictly forms an ideal solution. The mathematically expected volume change on mixing ($\Delta V_{mix}$) is defined as $x	ext{ mL}$, and the expected absolute enthalpy change on mixing ($\Delta H_{mix}$) is defined as $y	ext{ kJ}$. What is the absolute numerical value of the mathematical sum $(x + y)$?

Prashant Kotian · Accepted Answer

Correct answer: 0. For any strictly ideal solution, there is no expansion or contraction upon mixing, meaning , so . Additionally, no heat is absorbed or evolved because bond energies remain identical, meaning , so . Therefore, .

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