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कर्नाटक बोर्ड पी.यू.सी.पीयूसी विज्ञान 2nd PUC Class 12

What is “semi permeable membrane”? - Chemistry

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प्रश्न

What is “semi permeable membrane”?

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उत्तर

Continuous sheets or films (natural or synthetic) which contain a network of submicroscopic holes or pores through which small solvent molecules like water can pass; but the passage of bigger molecules of solute is hindered, are known as semi permeable membrane. Diffusion taking place by this membrance is called Osmosis.

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अध्याय 2: Solutions - Exercises [पृष्ठ २५]

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एनसीईआरटी एक्झांप्लर Chemistry [English] Class 12
अध्याय 2 Solutions
Exercises | Q III. 45. | पृष्ठ २५

संबंधित प्रश्न

What role does the molecular interaction play in a solution of alcohol and water?


Suggest the most important type of intermolecular attractive interaction in the following pair.

acetonitrile (CH3CN) and acetone (C3H6O)


Define an ideal solution and write one of its characteristics.


What type of intermolecular attractive interaction exists in the pair of methanol and acetone?


The partial pressure of nitrogen in air is 0.76 atm and its Henry’s law constant is 7.6 × 104 atm at 300 K. What is the mole fraction of nitrogen gas in the solution obtained when air is bubbled through water at 300 K?


Which one of the following is incorrect for an ideal solution?


The mass of a non – volatile solute (molar mass 80 g mol-1) should be dissolved in 92g of toluene to reduce its vapour pressure to 90% ______.


For ideal solution the volume of mixing of the pure components to form the solution is ____________.


The rate at which a solid dissolves in liquid does not depend on ____________.


If two liquids A and B form minimum boiling azeotrope at some specific composition then ______.


Intermolecular forces between two benzene molecules are nearly of same strength as those between two toluene molecules. For a mixture of benzene and toluene, which of the following are not true?

(i) ∆mix H = zero

(ii) ∆mix V = zero

(iii) These will form minimum boiling azeotrope.

(iv) These will not form ideal solution.


Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of temperature, however molarity is a function of temperature. Explain.


Dissociation constant and molar conductance of an acetic acid solution are 1.78 × 10–5 mol L–1 and 48.15 S cm–2 mol–1 respectively. The conductivity of the solution is (considering molar conductance at infinite dilution is 390.5 S cm–2 mol–1)


If liquids A and B form an ideal solution, the ______.


1 mole of liquid A and 2 moles of liquid B make a solution having a total vapour pressure of 40 torr. The vapour pressure of pure A and pure B are 45 torr and 30 torr, respectively. The above solution ______.


What type of deviation from Roult’s Law is expected when phenol and aniline are mixed with each other? What change in the net volume of the mixture is expected? Graphically represent the deviation.


Suggest the most important type of intermolecular attractive interaction in the following pair.

NaClO4 and water


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