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प्रश्न
Derive an expression to calculate molar mass of non-volatile solute by osmotic pressure measurement.
उत्तर
For very dilute solution
Where π = `(n_2RT)/V`
π = Osmotic Pressure
n2 = Number of moles of solute
R = Gas constant
T = Absolute temperature
V = Volume of solution
n2 = `(W_2 ("Mass of solute"))/(M_2 ("Molar mass of solution"))`
M2 = `(W_2RT)/(πV)`
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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.
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Which of the following is not a colligative property?
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.
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(c) `MgCl_2`
(d) KCl
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hypotonic solution
Choose the most correct option.
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(iii) Solute and solvent may or may not be same.
(iv) Solute is always same solvent may be different.
Give an example of a material used for making semipermeable membrane for carrying out reverse osmosis.
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| Column I | Column II |
| (i) Saturated solution | (a) Solution having same osmotic pressure at a given temperature as that of given solution. |
| (ii) Binary solution | (b) A solution whose osmotic pressure is less than that of another. |
| (iii) Isotonic solution | (c) Solution with two components. |
| (iv) Hypotonic solution | (d) A solution which contains maximum amount of solute that can be dissolved in a given amount of solvent at a given temperature. |
| (v) Solid solution | (e) A solution whose osmotic pressure is more than that of another. |
| (vi) Hypertonic solution | (f) A solution in solid phase. |
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