JEE Main 2019 — Chemistry solution

JEE Main2019Chemistry

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

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

Solution

$π_{X Y} = 4 π_{BaC l_{2}}$

$∴ 2 [XY] = 4 \times (0.01) \times 3$

$[XY] = 0 .06$

$= 6 \times 1 0^{- 2} \frac{mol}{L}$

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