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In case of electrolyte which dissociates...

In case of electrolyte which dissociates in the solution the van Hoff factor I

A

`gt 1`

B

`lt 1`

C

1

D

`gt 1` or `lt 1`

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A
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In case a solute associates in solution, the van't Hoff factor,

Colligative properties of solution depend upon the number of particles present in solution. Experimental values colligative properties for electrolytes are always higher than these obtained theoretically because electrolyte dissociates to furnish more ions in solution. The ration of experimental values to theoretical values is called as van't Hoff factor (i) . For 1M solution of a weak acid HA , the dissociation constant K in terms of van't Hoff factor:

Colligative properties of solution depend upon the number of particles present in solution. Experimental values colligative properties for electrolytes are always higher than these obtained theoretically because electrolyte dissociates to furnish more ions in solution. The ration of experimental values to theoretical values is called as van't Hoff factor (i) . van't Hoff factor for dimerisation of benzoic acid in water, assuming 70% degree of association:

A solute forms a pentamer when dissolved in a solvent. The van't Hoff factors 'I' for the solute will be :

For solutes which do not undergo any association or dissociation in a solute, van't Hoff factor (i) will be

The electrolyte solutions show abnormal colligative porperties.To account for this effect we define a quantity called the Van't Hoff factor given by i=("Actual number of particles in solution after dissociation")/("Number of formula units initially dissolved in solution") i=1 ("for non-electrolytes") igt1 ("for electrolytes, undergoing dissociation") ilt1 ("for solutes, undergoing association") Answer the following questions: Benzoic acid undergoes dimerization in bezene solution. The Van't Hoff factor i for the solutions is

What is the degree of dissociation for Ca(NO_(3))_(2) solution if van't Hoff factor = 2.4 ?

NARAYNA-SOLUTIONS & COLLIGATIVE PROPERTIES -EXERCISE : 2 (C.W)
  1. 200cm^(3) of an aqueous solution contains 1.26g of a polymer. The osmo...

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  2. The osmotic pressure of a solution of an organic substance containing ...

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  3. Calculate the osmotic pressure of a decinormal solution of NaCl which ...

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  4. What is the volume of solution containing 1g mole of sugar that will g...

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  5. Find the osmotic pressure M/20 solution of urea at 27^(@)C (S = 0.0821...

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  6. The osmotic pressure of decimolar solution of urea at 27^(@)C is a.2...

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  7. What is the volume of a solution containing 2g mole of sugar that will...

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  8. In case of electrolyte which dissociates in the solution the van Hoff ...

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  9. For a very dilute aqueous solution of H(3)PO(3) van't Hoff factor

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  10. The substance A when dissolved in solvent B shows the molecular mass c...

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  11. The Van't Hoff factor for a dillute aqueous solution of glucose is

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  12. The vant Hoff factor for a very dilute solution of Fe(2)(SO(4))(3) is

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  13. The van't Hoff factor for a very dilute aqueous solution of KAg(CN)(2)...

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  14. The magnitude of colligative properties in colloidal dispersions is …....

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  15. If a solute undergoes dimerisation and trimerisation, the minimum valu...

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  16. The Van't Hoff factor of Hg(2)Cl(2) in its aqueous solution will be (H...

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  17. Osmotic Pressure of 0.1 M aqueous solution of MgCl(2)at 300k is 4.92 a...

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  18. 0.002 molar solutiion of NaCl having degree of dissociation of 90% at ...

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  19. 75.2 g of C(6)H(5)OH (phenol) is dissolved in a solvent of K(f) = 14. ...

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  20. 1.00 g of a non-electrolyte solute dissolved in 50g of benzene lowered...

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