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What is Van't Hoff factor ?...

What is Van't Hoff factor ?

A

`i=(Normal molar mass)/(Abnormal molar mass)`

B

`i=(Abnormal molar mass)/(Normal molar mass)`

C

`i=(Observed colligative property)/(Calculate colligative property0`

D

`i=(Calculate colligative property)/(Observed colligative property)`

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Under what conditions Van't Hoff factor , i is eaual to unity

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The degree of dissociation of a weak electrolyte, A_xB_y is related to Van't Hoff factor by the expression:

What mass of NaCl must be dissolved in 65.0 g of water to lower the freezing point of water by 7.50^@C ? The freezing point depression constant (k_f) for water is 1.86^@C/m . Assume that Van't Hoff factor for NaCl is 1.87. (Molar mass of NaCl =58.5g).

3.9 g of benzoic acid dissolved in 49 g of benzene shows a depression in freezing point of 1.62K. Calculate the Van't Hoff factor and predict the nature of solute (associated or dissociated). (Given: Molar mass of benzoic acid= 122 gmol^-1 , K_f for benzene= 49 K kg mol^-1 )

0 . 6 ml of acetic acid (CH_(3) CO OH) having density 1 . 0 6 g mL^(-1) dissolved in 1 litre of water . The depression in freezing point observed for this strength of acid was 0.0205 K. Calculate the Van't Hoff factor and dissociation constant of the acid .( K_(f) for water = 1. 86 K kg mol^(-1) )

Define the following terms: Van't Hoff factor?

MODERN PUBLICATION-SOLUTIONS -EXERCISE
  1. Which of the following statements are not true?

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  2. Show that relative lowering in vapour pressure is a colligative pr...

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  3. What is Van't Hoff factor ?

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  4. Isotonic solutions must have the same

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  5. Which of the following binary operation is commutative ?

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  6. In isotonic solutions………

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  7. Fill in the blanks- malaria is caused by .

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  8. Colligative properties are observed when

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  9. Match the following:

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  10. Match the items given in column I with type of solutoins given in colu...

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  11. Match the laws given in Column I with expression given in Column II.

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  12. Match the terms given in Column I with expression given in Column II.

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  13. In the following questions a statement of assertion followed by a stat...

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  14. In the following questions a statement of assertion followed by a stat...

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  15. In the following questions a statement of assertion followed by a stat...

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  16. State the conditions resulting in reverse osmosis?

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  17. If 30 g a solute of molecular mass 154 is dissolved in 250 g of benzen...

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  18. How will you calculate the molecular mass of a solute with the help of...

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  19. What is the significance of van't Hoff factor?

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  20. How is the molality of a solution different from its molarity?

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