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STD 12 -1. Solution and colligative properties — JEE STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 ScienceJEESTD 12 -1. Solution and colligative properties4 Marks
MCQ
An ideal solution has two component $A$ and $B$. If $A$ is more volatile than $B$ then, the correct relation between mole fraction of $A$ in liquid $(X_A)$ and vapour phase $(Y_A)$ is
  • A
    $X_A < Y_A$
  • B
    $X_A = Y_A$
  • ✓
    $X_A > Y_A$
  • D
    Nothing can be said
✓

Answer

Correct option: C.
$X_A > Y_A$
c
Solubility of gas in liquid is exothermic process. So solubility of gas in liquid is decreases with increase in temperature.

$P=\mathrm{k}_{\mathrm{H}} \cdot \mathrm{X}_{\mathrm{gas}}$

solubility of gas increases with increase in pressure.

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