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A decimolar solution potassium ferrocyanide is 50 % dissociated at 300 K . The osmotic pressure of solution is (R=8.314 JK ⁻¹ ~mol ⁻¹ )

Options

  1. A7.48 atm
  2. B4.99 atm
  3. C3.74 atm
  4. D6.23 atm

Correct answer

A. 7.48 atm

Step-by-step solution

=0.5 (50 % dissociated) The reaction involves is Total moles at equilibrium =1- +4 + Total =1+4 van't Hoff factor (i)= 1+4 1 =1+4 0.5=3 Osmotic pressure, =i C R T aligned C & =0.1 M =10^2 ~mol ~m ⁻³ & =3 10^2 8.314 300 & =7.483 10^5 Nm ⁻² aligned or =7.48 ~atm

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