JEE Main 2019 — Solutions Question with Solution
From: JEE Main 2019 (Online) 10th January Morning Slot
Question
Liquids A and B form an ideal solution in the entire composition range. At 350 K, the vaapor pressures of pure A and pure B are 7 103 Pa and 12 103 Pa, respectively . The composition of the vapor in equilibriumwith a solution containing 40 mole percent of A at this temperature is :
Choose an option
Show full solutionCorrect option: B
Correct answer
BxA = 0.28; xB = 0.72
Step-by-step explanation
Practice this on the real CBT interface
Solve this JEE Main question (and the rest of the Solutions chapter) on PrepSharp's TCS iON-style CBT player — with timer, bookmarks and session analytics.
Solve interactively →About this question
This is a previous-year question from JEE Main 2019, covering the Solutions chapter of Chemistry. PrepSharp catalogues every PYQ from JEE Main with a verified answer key and step-by-step solution prepared by IIT alumni — so you can search by chapter, topic or year and revise efficiently.