Home
Class 12
CHEMISTRY
Assertion (A): Camphor is used as a solv...

Assertion (A): Camphor is used as a solvent in the determination of the molecular mass of naphthalene and anthracene.
Reason (R ): camphor has high molal elevation constant.

A

Statement-1 is True, Statement-2 is True, Statement -2 is correct explanation for Statement -1

B

Statement-1 is True, Statement-2 is True, Statement-2 is NOT a correct explanation for Statement-1

C

Statement-1 is True, Statement-2 is False

D

Statement-1 is False, Statement-2 is True

Text Solution

Verified by Experts

Learn as fact. `K_(f)` (camphor) `=37.7` K kg /mol.
Promotional Banner

Topper's Solved these Questions

  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise JEE Main (Archive)|57 Videos
  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise JEE Advanced (Archive)|31 Videos
  • THEORY OF SOLUTIONS

    VMC MODULES ENGLISH|Exercise LEVEL 1|75 Videos
  • THE SOLID STATE

    VMC MODULES ENGLISH|Exercise EXERCISE-J|10 Videos
  • THERMOCHEMISTRY

    VMC MODULES ENGLISH|Exercise JEE ADVANCED (ARCHIVE)|31 Videos

Similar Questions

Explore conceptually related problems

Why is camphor preferred as a solvent for measuring the molecular mass of naphthalene by Rast method?

Camphor is often used in molecular mass determination because

Camphor is often used in molecular mass determination because

Camphor is used as solvent in colligative properties becaouse it has ......

The main application of osmotic pressure measurement is in the determination of the molar mass of a substance which is either slightly soluble or has a very high molar mass such as proteins, polymers of various types and colloids.This is due to the fact that even a very small concentraion of the solution produces fairly large magnitude of osomotic pressure.In the laboratory the concentrations usually employed are of the order of 10^(-3) to 10^(-4) M.At concentration of 10^(-3) mol dm^(-3) , the magnitude of osmotic pressure of 300 K is : P=10^(-3)xx0.082xx300=0.0246 atm or 0.0246xx1.01325xx10^5=2492.595 Pa At this concentration, the values of other colligative properties such as boiling point elevation and depression in freezing point are too small to be determined experimentally. Further polymers have following two types of molar masses : (A) Number average molar mass (barM_n) , which is given by (undersetisumN_iM_i)/(undersetisumN_i) where N_i is the number of molecules having molar mass M_i . (B) Molar average molar mass (barM_m) , which is given by (undersetisumN_iM_i^2)/(undersetisumN_iM_i) Obviously the former is independent of the individual characteristics of the molecules and gives equal weightage to large and small molecules in the polymer sample.On the other hand later gives more weightage to the heavier molecules.Infact with the help of a colligative property only one type of molar mass of the polymer can be determined. One gram each of polymer A (molar mass=2000) and B(molar mass=6000) is dissolved in water to form one litre solution at 27^@C .The osmotic pressure of this solution will be :

Assertion(A): The mass of nickle catalyst recovered after being used in the hydroenation of an oil is less than the mass of nickle added to the reaction. Reason(R): Catalyst take part in the reaction but the are recoveres in the end.

Assertion (A) : The rate constant of a pseudo unimolecular reaction has the units of a second order reaction. Reason (R ): A pseudo unimolecular reaction is a reaction of second order in whiich one of the reactant is present in large excess.

Assertion (A) Network polymers are thermosetting Reason (R ) Network Polymers have high molecular mass

Assertion (A) Network polymers are thermosetting Reason (R ) Network Polymers have high molecular mass

Assertion (A): Larger the value of cryoscopic constant of the solvent, lesser will be the freezing point of the solution. Reason (R ): Depression in the freezing point depends on the nature of the solvent.

VMC MODULES ENGLISH-THEORY OF SOLUTIONS-LEVEL 2
  1. Which pair(s) of liquids on mixing is/are expected to show no net volu...

    Text Solution

    |

  2. Assertion (A): The molecular mass of polymers cannot be calculated usi...

    Text Solution

    |

  3. Assertion (A): Camphor is used as a solvent in the determination of th...

    Text Solution

    |

  4. The relative decrease in VP of an aqueous glucose dilute solution is f...

    Text Solution

    |

  5. Which has maximum osmotic pressure at temperature T? a. 100 mL of 1...

    Text Solution

    |

  6. A mixture of volatile component A and B has total vapour pressure (in ...

    Text Solution

    |

  7. 1 mol benzene (P^(@)("benzene")=42 mm) and 2 mol toluence (P^(@)("to...

    Text Solution

    |

  8. When non-volatile solute is added to a pure solvent, the:

    Text Solution

    |

  9. An aqueous solution has freezing point at -2.55^(@)C. What is its boi...

    Text Solution

    |

  10. Among the following, the solution which shows the lowest osmotic press...

    Text Solution

    |

  11. A 0.1 M solution of glucose (molecular weight 180 g "mol"^(-1)) and a...

    Text Solution

    |

  12. Which of the following statements is incorrect ?

    Text Solution

    |

  13. Two liquids A and B form an ideal soluton. The vapour pressure of pure...

    Text Solution

    |

  14. M(n)= Normal molecular mass of solute M(0)= Observed molecule mass o...

    Text Solution

    |

  15. At 17^(@)C, the osmotic pressure of sugar solution is 580 torr. The so...

    Text Solution

    |

  16. The vapour pressure of an aqueous solution of glucose is 750 mm of Hg ...

    Text Solution

    |

  17. The boiling point of an aqueous solution of a non-volatile solute is 1...

    Text Solution

    |

  18. The relative lowering of vapour pressure of an aqueous solution of a n...

    Text Solution

    |

  19. Calculate the entropy change for vapourisation of water if latent heat...

    Text Solution

    |

  20. We have 200 mL of 6% urea solution at 27^(@)C. Osmotic pressure due to...

    Text Solution

    |