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What is Van't Hoff factor ?...

What is Van't Hoff factor ?

A

>1

B

<1

C

0

D

1

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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. 31 gm of ethylene glycol (C2H6O2) is mixed with 500 gm of solvent. (K...

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  2. Which of the following is not a colligative property?t

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  3. What is Van't Hoff factor ?

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  4. Osmotic pressure of the solution can be increase by

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  5. The elevation in boiling point of a solution 13.44 g of CuCl2 in 1 kg...

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  6. When 20 g of napthoic acid (C11H8O2) is dissolved in 50 g of benzene(K...

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  7. The Henry's law constant for the solubility of N2 gas in water at 298K...

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  8. Dissolving 120g of urea (mol.wt 60) in 1000g of water gave a solution ...

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  9. The freezing point of a solution containing 0.1g of K3[Fe(CN)6] in 100...

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  10. For a dilute solution containing 2.5 g of a non volatile non electroly...

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  11. Colligative properties of a solution are

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  12. The solution showing positive deviations

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  13. Non-ideal solutions showing negative deviations are

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  14. Which of the following from nearly ideal solution?

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  15. In the depression in freezing point experiment, it is obsreved that

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  16. For 0.5m aqueous solution of KCl, the important physical properties at...

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  17. Fill the blank with appropriate answer- and are the examples of micr...

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  18. Benzene and napthalene form an ideal solution at room temperature. For...

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  19. The solution which is isotonic with 6% solution of urea is/are is

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  20. Mixture showing positive deviation from Raoult's law at 35^@C is

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