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The correct expression of Van't Hoff fac...

The correct expression of Van't Hoff factor is

A

Calculated osmotic pressure/ observed osmotic pressure

B

Observed molecular mass/calculated molecular mass

C

Calculated boiling point/observed boiling point.

D

Observed colligative property/calculated colligative propety

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A 1 molal aquous solution of trichloroacetic acid (C Cl_3COOH) is heated to its boiling point. The solution has the boiling point of 100.18^@C . Determine the Van't Hoff factor for the acid ( k_b for water = 0.512)

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What mass of NaCl (molar mass= 58.5g mol^-1) must be dissolved in 65g of water to lower the freezing point by 7.5^@C ? The freezing point depression constant, K_f for water is 1.86 K kg mol^-1 . Assume vant Hoff factor for NaCl is 1.87.

R G PUBLICATION-SOLUTION-EXERCISE
  1. The osmotic pressures of equimolar solutions of BaCl2, NaCl and sucros...

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  2. When glycerine is added to a litre of water which of the following phe...

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  3. The correct expression of Van't Hoff factor is

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  4. Benzoic acid under goes dimenization in benzene solution, the Van't Ho...

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  5. Explain the following terms Ebullioscopic constant

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  6. What is Vant Hoff factor?

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  7. Explain the following terms Reverse Osmosis

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  8. Which of the following isomers is more volatile and why o-nitrophenol ...

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  9. 2 mol ethanol is dissolved in 3 mol water. Calculate the mole fraction...

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  10. Calculate the mass of NaCl in 5 molal solution.

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  11. Is there any effect of pressure on solubility of solid in liquid.

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  12. State Henry's law and mention its two important applications.

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  13. H2S, a toxic gas with rotten egg like smell, is used for the qualitati...

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  14. State Rault's law for solution of volatile liquid. Taking suitable exa...

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  15. Decrease in vapour pressure of water by adding 5 mol sucrose or 5 mol ...

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  16. What type of deviation from ideal behaviour exist between acetone and ...

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  17. The liquids from azeotrope cannot be seperated from each other why?

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  18. What is meant by "Relative lowering of Vapour pressure".

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  19. What would be volume of the mixture if 100 ml of a liquid 'A' was mixe...

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  20. What is Vant Hoff factor?

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