Verified Solution • 2025–26 Session moderate

QJEEM19Chcf25: JEE Main 2019 Chemistry - Class 12 JEEM19Chcf25 Solution: The osmotic pressure of a dilute solution of an ionic compound…

The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution of 0.01 M BaCl2 in water. Assuming complete dissociation of the given ionic compounds in water, the concentration of XY (in mol L–1) in solution is :

Multiple Choice Options

  • A 4 × 10–4
  • B 6 × 10–2
  • C 4 × 10–2
  • D 16 × 10–4

Step-by-Step Verified Solution

Given that, osmotic pressure of XY(πXY) in water is four times that of a solution of 0.01 M BaCl2(πBaCl2).

∴ πXY = 4 × πBaCl2

⇒ 2 [XY] = 4 × 3 × 0.01

⇒ [XY] = 0.06 = 6 × 10–2 mol L–1

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