Advertisements
Advertisements
प्रश्न
At 300 K, 36 g of glucose present in a litre of its solution has an osmotic pressure of 4.98 bar. If the osmotic pressure of the solution is 1.52 bars at the same temperature, what would be its concentration?
Advertisements
उत्तर
Given: Temperature (T) = 300 K
R = 0.083 bar L K−1 mol−1
π V = `w/(M') RT`
For the first case,
Osmotic pressure for the first case (π) = 4.98 bar
4.98 × 1 = `36/(M') xx R xx T` ...(i)
For the second case,
Osmotic pressure for the second case (π) = 1.52 bar
1.52 × 1 = `w/(M') xx R xx T` ...(ii)
Dividing eq. (i) by eq. (ii), we get,
`4.98/1.52 = 36/w`
or `w = (1.52 xx 36)/4.98`
= 10.99 g
∴ Moles of solute present in 1 L of solution = `10.99/180`
= 0.061
Hence, the molarity of the solution is 0.061 M.
संबंधित प्रश्न
What happens when the external pressure applied becomes more than the osmotic pressure of solution?
Calculate the osmotic pressure in pascals exerted by a solution prepared by dissolving 1.0 g of polymer of molar mass 185,000 in 450 mL of water at 37°C.
Define osmotic pressure.
Calculate the mass of a compound (molar mass = 256 g mol−1) to be dissolved in 75 g of benzene to lower its freezing point by 0.48 K (Kf = 5.12 K kg mol−1).
Choose the most correct option.
In calculating osmotic pressure the concentration of solute is expressed in _______.
Choose the most correct option.
The osmotic pressure of blood is 7.65 atm at 310 K. An aqueous solution of glucose isotonic with blood has the percentage (by volume)________.
Answer the following.
A solvent and its solution containing a nonvolatile solute are separated by a semipermeable membrane. Does the flow of solvent occur in both directions? Comment giving a reason.
What are hypertonic solutions?
Explain the phenomenon of osmosis.
Which of the following is a colligative property?
20 g of a substance were dissolved in 500 mL of water and the osmotic pressure of the solution was found to be 600 mm of mercury at 15°C. The molecular weight of the substance is ______.
The average osmotic pressure of human blood is 7.8 bar at 37°C. What is the concentration of an aqueous NaCl solution that could be used in the blood stream?
The temperature at which 10% aqueous solution of (W/V) of glucose will show the osmotic pressure of 16.4 atoms is: (R = 0.082 L atom K−1 mol−1)
At a given temperature, osmotic pressure of a concentrated solution of a substance ______.
How can you remove the hard calcium carbonate layer of the egg without damaging its semiprermiable membrane? Can this egg be inserted into a bottle with a narrow neck without distorting its shape? Explain the process involved.
Osmotic pressure of a solution increases if
Which one of the following is a colligative property?
Blood cells retain their normal shape in solution which are
In Isotonic solution
The vapour pressure of water is 12.3 k pa at 300 k. Calculated the vapour pressure of molal solution in it.
Derive an expression to calculate molar mass of non-volatile solute by osmotic pressure measurement.
Assertion (A) : Osmotic pressure is a colligative property.
Reason (R) : Osmotic pressure is proportional to the molality.
A solution containing 10 g glucose has osmotic pressure 3.84 atm. If 10 g more glucose is added to the same solution, what will be its osmotic pressure? (Temperature remains constant)
How will you determine molar mass of solute from osmotic pressure?
Write the condition of reverse osmosis.
The plot of osmotic pressure (π) vs concentration (mol L−1) for a solution gives a straight line with slope 25.73 L bar mol−1. The temperature at which the osmotic pressure measurement is done is ______.
(Use R = 0.083 L bar mol−1 K−1)
