Question
A decimolar solution potassium ferrocyanide is 50 \% dissociated at 300 K . The osmotic pressure of solution is (R=8.314 JK ^ -1 ~mol ^ -1 )
BITSAT
Chemistry
Solutions
2024
BITSAT 2024 (Memory Based Paper 3)
BITSAT Chemistry Question (2024) — Solution
Options
- A. 7.48 atm
- B. 4.99 atm
- C. 3.74 atm
- D. 6.23 atm
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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