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The vapour pressure of pure benzene at a...

The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non-volatile, non-electrolyte solid weighing 0.5g when added to 39.0 g of benzene (molar mass 78 g `"mol"^(-1)`), vapour pressure of the solution, then, is 0.845 bar. What is the molar mass of the solid substance ?

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The vapour pressure of pure Benzene at a certain temperature is 0.850 bar. A non-volatile non-electrolyte solid weighing 0.5 g.when added to 39.0 g of benzene (molar mass 78 g 'mol"^(-1) ) vapour pressure is 0.845 bar. What is the molar mass of the solid substance ?

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At 298 K, the vapour pressure of a solution of 7.5 g of non-volatile solute in 90 g of water is 2.8 kPa. If 18 g of water is added to this solution vapour pressure becomes solution the vapour pressure becomes 2.81 kPa at same temperature, the molar mass of solute in g mol^(-1) is

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AAKASH SERIES-DILUTE SOLUTIONS-EXERCISE - 1.1.4
  1. What are colligative properties ? Give their names.

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  2. Compare the lowering of vapour pressure of equimolar calcium bromide a...

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  3. Discuss the depression of freezing point of a solution.

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  4. Boiling point of a liquid increases upon dissolving a non - volatile s...

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  5. The vapour pressure of pure benzene at a certain temperature is 0.850 ...

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  6. Vapour pressure of pure water at 298 K is 23.8 mm Hg. 50g urea (NH(2)C...

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  7. 2.0 g of a non-electrolyte solute dissovled in 100 g of benezene lower...

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  8. When 0.9 g of a non-volatile solute was dissovled in 45 g of benezene,...

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  9. Cryoscopic constant for benezene is 4.9 K kg mol^(-1) . Freezing point...

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  10. At 750 torr water was a boiling point 372.63 K. How much sucrose is to...

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  11. What are : (a) osmosis and (b) osmatic pressure ?

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  12. Disccuss on reverse osmasis and water purification.

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  13. Molar mass of polymer is 185000 g mol^(-1) . Calculate the osmotic pre...

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  14. One liter aqueous solutions contains 2 xx 10^(-2) kg glucose at 25^@C ...

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  15. The osmatic pressure of a non-volatile solute 'X' in benezene at 25^@C...

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  16. 200" cm"^(2) of an aqueous solution of a protein contains 1.26 g of th...

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  17. Discuss the van't Hoff factor.

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  18. What are abnormal molar masses? Why are the molar masses abnormal ?

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