Home
Class 12
CHEMISTRY
At 25^(@)C, a solution containing 0.2g o...

At `25^(@)C`, a solution containing `0.2g` of polyisobutylene in `100mL` of benzene develpoed a rise of `2.4mm` at osmotic equilibrium. Calculate the molecular weight of polyisobutylene if the density of solution is `0.88 g// mL`

A

`2.39 xx10^(5)g`

B

`33.9xx10^(5)g`

C

`43.8xx10^(5)g`

D

`78.6xx10^(5)g`

Text Solution

Verified by Experts

The correct Answer is:
1
Height developed `=2.4mm`
Osmotic pressure `=h.d.g.=(2.4)/(10)xx0.88xx981=207.187`dyne`cm^(-2)`
Now `piv=nRTrArr207.187xx100=(0.2)/(m)xx8.314xx10^&(7)xx298" "(R` in erg,V in mL, using CGS system)
`m=2.39xx10^(5)`
Promotional Banner

Topper's Solved these Questions

  • SOLID STATE

    RESONANCE|Exercise PHYSICAL CHEMITRY (SOLID STATE)|45 Videos

  • SOLUTIONS

    RESONANCE|Exercise Advabced Level Problems (PART-2)|35 Videos

Similar Questions

Explore conceptually related problems

At 25^(@)C , a solution containing 0.2 g of polyisobutylene in 100 mL of benzene developed a rise of 2.4 mm at osmotic equilibrium. Calculate the molecular weight of polyisobutylene if the density of solution is 0.88 g// mL .

The osmotic pressure of a solution of a synthetic polyisobutylene in benzene was determined at 25^(@)"C" . A sample containing 0.20 g of solute/100 "cm"^(3) of solution developed a rise of 2.4 mm at osmotic equilibrium. The density of the solution was 0.88"g"//"cm"^(3) . What is the molecular weight of the polyisobutylene?

A solution containing 3.00 g of a monobasic organic acid was just neutralised by 40 mL of 05 N NaOH solution. Calculate the molecular weight of the acid.

What osmotic pressure would 1.25 molal sucrose solution exhibit at 25^(@)C ? The density of the solution is 1.34 g//ml

A solution containing 4 g of a non-volatile organic solute per 100 mL was found to have an osmotic pressure equal to 500 cm of mercury at 27^(@)C . The molecular weight of solute is

The molarity of a solution containing 5.0 g of NaOH in 200 mL solution is

RESONANCE-SOLUTION AND COLLIGATIVE PROPERTIES-PHYSICAL CHEMITRY (SOLUTION & COLLIGATIVE PROPERTIES)
  1. An aqueous solution of a solute AB has b.p. of 101.08^(@)C( AB is 100%...

    Text Solution

    |

  2. What weight of non- volatile solute,urea (NH(2)CONH(2)) needs to be di...

    Text Solution

    |

  3. At 25^(@)C, a solution containing 0.2g of polyisobutylene in 100mL of ...

    Text Solution

    |

  4. Osomotic pressure at 300 K when 1g glucose (P(1)),1g urea(P(2)) and 1g...

    Text Solution

    |

  5. Which of the following statement is incorrect . If the intermolecular ...

    Text Solution

    |

  6. An aqueous solution of 0.1 molal concentration of sucrose should have ...

    Text Solution

    |

  7. When 250 mg of eugenol is added to 100 g of camphor (k(f)=39.7" molali...

    Text Solution

    |

  8. The freezing point of a 5g CH(3)COOH (aq) per 100g water is 01.576^(@...

    Text Solution

    |

  9. 6g of urea ( molecular weight =60) was dissolved in 9.9 moles of water...

    Text Solution

    |

  10. Calculate the weight of non- volatile solute having molecular weight 4...

    Text Solution

    |

  11. At 25^(@)C, the vapour pressure of pure liquid A ( mol wt. =40) is 100...

    Text Solution

    |

  12. The vapour pressure curves of the same solute in the same solvent are ...

    Text Solution

    |

  13. Total vapour pressure of mixture of 1 mole of volatile component A (P(...

    Text Solution

    |

  14. Water and chlorobenzene are immiscible liquids. Their mixture boils at...

    Text Solution

    |

  15. The degree of dissociation of an electrolyte is alpha and its van't Ho...

    Text Solution

    |

  16. A complex is represented as CoCl(3)Xnh(3) . Its 0.1 molal solution in ...

    Text Solution

    |

  17. The freezing point among the following equimolal aqueous solutions wil...

    Text Solution

    |

  18. A 5% solution of cane sugar (molecular weight =342) is isotonic with a...

    Text Solution

    |

  19. What is the correct sequence of osmotic pressure of 0.01 M aq. solutio...

    Text Solution

    |

  20. X(3)Y(2)(i=5) when reacted with A(2)B(3)(i=5 in aqueous solution gives...

    Text Solution

    |