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The molecular mass of NaCI as determined...

The molecular mass of `NaCI` as determined by osmotic pressure measurement is

A

Same as theoritical value

B

Higher than theoritical value

C

Lower than theoritical value

D

Negative

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Verified by Experts

The correct Answer is:
C
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Osmotic pressure is measured by

Statement 1: Mbar(n) (number -average molecular mass) of a polymer is determined by osmotic pressure method,while Mbar(w) (weight -average molecular mass)is determined by ultracentrifuge method. Statement 2:Osmotic pressure is a colligative property.

The molar mass of NaCl determined by colligative property measurement will be

For a silute solution containing a nonvolatile solute, the molar mass of solute evaluated from the osmotic pressure measurement is given as:

Assertion: Molecular mass of a polymer is usually determined by osmotic pressure. Reason: This method measure more accurately the molecular mass of a polymer than by any other colligative property.

The osmotic pressure is due to :

For getting accurate value of molar mass of a solute by osmotic pressure measurement

NARAYNA-SOLUTIONS & COLLIGATIVE PROPERTIES -EXERCISE : 1 (C.W)
  1. The density of 2M solution of acetic acid (Mol. Wt. 60) is 1.02 g ml^(...

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  2. Which of the following is correct ?

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  3. Which of the following has no unit?

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  4. What is the mole fraction of glucose in 10% w/W glucose solution ?

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  5. Calculate the weight of carbon dioxide dissolved in 1 L bottle of carb...

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  6. The boiling point of C(6)H(6) , CH(3)OH , C(6)H(5)NH(2) "and"C(6)H(5)N...

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  7. A solution is obtained by dissolving 12gof urea(mol.wt.60)in a litre o...

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  8. Lowering of vapour pressures of equimolar solution of glucose, sodium ...

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  9. Which of the following salt has the same value of Van’t Hoff factor ‘i...

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  10. Which one of the following represents the graph between log P on Y - a...

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  11. If an ideal solution is made by mixing 2 moles of benzene (p^(@)=266mm...

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  12. The molecular mass of NaCI as determined by osmotic pressure measureme...

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  13. Which among the following will show maximum osmotic pressure ?

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  14. An aqueous solution of 2 per cent (wt.//wt) non-volatile solute exerts...

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  15. Pure water boils at 99.725^(@)C at Shimla. If K(b) for water is 0.51 K...

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  16. Two elements A and B form compounds having molecular formula AB(2) and...

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  17. The amount of ice that will separate out on cooling a solution contain...

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  18. The osmotic pressure of solution at 0^(@)C is 4 atm what will be its o...

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  19. The molar mass of a solute X in g mol^(-1), if its 1% solution is isot...

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  20. Molal elevation constant "K"(b) for water is 0.52K//m. 0.1 molal solut...

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