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The following solutions were prepared by dissolving 10g of glucose (C6H12O6) in 250 ml of water (P1), 10g of urea (CH4N2O) in 250 ml of water (P2), and 10g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is:
By BYJU'S Exam Prep
Updated on: September 25th, 2023
(a) P3 > P1 > P2
(b) P2 > P1 > P3
(c) P1 > P2 > P3
(d) P2 > P3 > P1
The right option for the decreasing order of osmotic pressure of these solutions is P3 > P1 > P2. Osmotic pressure (π) is equal to iCRT, where C is the solution’s molar concentration. Osmotic pressure rises as solution molar concentration rises. Since the weight of each solute and the volume of its solution are equal, a greater solute’s molar mass will result in a smaller solute’s molar concentration and a lower solute’s osmotic pressure. Sucrose, Glucose, and Urea are in decreasing order of solute molar mass. Therefore, the correct order of osmotic pressure of the solution is P3 > P1 > P2
Osmotic Pressure
The least amount of pressure that should be supplied to a solution in order to stop solvent molecules from passing via a semipermeable membrane is called osmotic pressure (osmosis). It is a collaborative property that is reliant on how many solute particles are present in the solution. The following formula can be used to find osmotic pressure:
π = iCRT
Where,
- π is the osmotic pressure
- C is the molar concentration of the solute in the solution
- i is the van’t Hoff factor
- T is the temperature
- R is the universal gas constant
Summary:
The following solutions were prepared by dissolving 10g of glucose (C6H12O6) in 250 ml of water (P1), 10g of urea (CH4N2O) in 250 ml of water (P2), and 10g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is?
The following solutions were prepared by dissolving 10g of glucose (C6H12O6) in 250 ml of water (P1), 10g of urea (CH4N2O) in 250 ml of water (P2), and 10g of sucrose (C12H22O11) in 250 ml of water (P3). The right option for the decreasing order of osmotic pressure of these solutions is P3 > P1 > P2.
