For a completely ideal binary liquid solution, which of the following mathematical plots strictly yi — Solutions and Colligative Properties Chemistry Question
Question
For a completely ideal binary liquid solution, which of the following mathematical plots strictly yields a linear (straight line) graph? ($P_{total}$ is total pressure, $X_A$ is liquid mole fraction, $Y_A$ is vapour mole fraction).
Answer: C
💡 Solution & Explanation
While $P_{total} = P^0_A X_A + P^0_B X_B$ forms a straight line against $X_A$, it is a curve against $Y_A$. The strictly linear relationship involving the vapour phase mole fraction is given by Dalton-Raoult manipulation: $\frac{1}{P_{total}} = \frac{Y_A}{P^0_A} + \frac{Y_B}{P^0_B}$.
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