The osmotic pressure of a dilute solution of an ionic compound X Y in water is four times that of a solution…

The osmotic pressure of a dilute solution of an ionic compound XY in water is four times that of a solution 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
  1. 4×10-2
  2. 16×10-4
  3. 4×10-4
  4. 6×10-2

Solution

Osmotic pressure π=i×CRT

i=Van't hoff factor

According to question,

for XY i=2, BaCl2 i=3

πXY=4×πBaCl2

2×C×RT=4×3×0.01×RT

C=6×0.01=0.06 M

Asked in: JEE Main 2019 (09 Apr Shift 1)

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