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प्रश्न
Which of the following statements is false?
पर्याय
Units of atmospheric pressure and osmotic pressure are the same.
In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.
The value of molal depression constant depends on nature of solvent.
Relative lowering of vapour pressure, is a dimensionless quantity.
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उत्तर
In reverse osmosis, solvent molecules move through a semipermeable membrane from a region of lower concentration of solute to a region of higher concentration.
Explanation:
In reverse osmosis, solvent molecules move through a semipermeable membrane from higher concentration of solute to lower concentration.
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संबंधित प्रश्न
Determine the osmotic pressure of a solution prepared by dissolving 2.5 × 10−2 g of K2SO4 in 2L of water at 25°C, assuming that it is completely dissociated.
(R = 0.0821 L atm K−1 mol−1, Molar mass of K2SO4 = 174 g mol−1)
What happens when the external pressure applied becomes more than the osmotic pressure of solution?
A solution containing 15 g urea (molar mass = 60 g mol–1) per litre of solution in water has the same osmotic pressure (isotonic) as a solution of glucose (molar mass = 180 g mol–1) in water. Calculate the mass of glucose present in one litre of its 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.
Which of the following 0.1 M aqueous solutions will exert the highest osmotic pressure?
Choose the most correct option.
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Answer the following.
Explain reverse osmosis.
Answer the following.
How molar mass of a solute is determined by osmotic pressure measurement?
Explain the phenomenon of osmosis.
Define Osmosis.
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:
Osmotic pressure of a solution is 0.0821 atm at a temperature of 300 K. The concentration in moles/litre will be:
Give an example of a material used for making semipermeable membrane for carrying out reverse osmosis.
Isotonic solutions have same
Isotonic solutions are the solutions having the same ______.
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)
Arrange the following solutions in the order of increasing osmotic pressure (π) assuming complete ionization.
- 0.5M Li2 SO4
- 0.5M KCl
- 0.5M Al2 (SO4)3
- 0.1 M BaCl2
Define reverse osmosis.
Name the four colligative properties that are oftently used for determination of molecular mass.
Write the condition of reverse osmosis.
