JEE Main · 2025 · Shift-ImediumSOL-136

Which of the following graph correctly represents the plots of KH at 1 bar gases in water versus temperature? (Gases:…

Solutions · Class 12 · JEE Main Previous Year Question

Question

Which of the following graph correctly represents the plots of KHK_H at 1 bar gases in water versus temperature? (Gases: \ceO2\ce{O2}, \ceN2\ce{N2}, \ceHe\ce{He}, \ceCH4\ce{CH4})

Options
  1. a

    KHK_H order: \ceO2\ce{O2} highest, curves increase then decrease

  2. b

    KHK_H increases linearly for all gases

  3. c

    KHK_H order: \ceHe\ce{He} highest, \ceN2\ce{N2} next, \ceO2\ce{O2} lowest, all with maxima

  4. d

    KHK_H order: \ceHe>\ceN2>\ceCH4\ce{He} > \ce{N2} > \ce{CH4}, all increase then decrease with temperature

Correct Answerd

KHK_H order: \ceHe>\ceN2>\ceCH4\ce{He} > \ce{N2} > \ce{CH4}, all increase then decrease with temperature

Detailed Solution

Strategy:\n> Higher KHK_H corresponds to lower solubility. For permanent gases, solubility ty\pically decreases then increases with temperature, meaning KHK_H passes through a maximum.\n\nOrdering:\nSolubility: \ceCH4>N2>He\ce{CH4 > N2 > He} (He is least soluble due to minimal IMF).\nThus, KHK_H order: \ceHe>N2>CH4\ce{He > N2 > CH4}.\n\nThe correct plot shows \ceHe\ce{He} with the highest KHK_H values.\n\ntextAnswer:(4)\boxed{\\text{Answer: (4)}}

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Which of the following graph correctly represents the plots of KH at 1 bar gases in water versus… (JEE Main 2025) | Canvas Classes