NEET Chemistry (general) MCQ Question
Consider a diagram representing the plot of vapour pressure against mole fraction for an ideal solution at constant temperature. The dashed lines I and II depict the partial pressures of components 1 and 2, respectively, and line III shows the total vapour pressure. Which of the following statements accurately describes the relationship between the mole fractions and the partial pressures in this plot?
The partial pressure of component 1 is directly proportional to its mole fraction.
The total vapour pressure is the sum of the mole fractions.
The partial pressure of component 2 is inversely proportional to its mole fraction.
The total vapour pressure decreases with increasing mole fraction of component 1.
Correct Answer
Detailed Explanation
According to the NCERT context, for an ideal solution, the partial pressures of the components are directly proportional to their respective mole fractions, as shown by dashed lines I and II in the plot.
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