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

Its molal depression constant is high

B

Its melting point is high

C

It is cheap

D

All of these

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • LIQUID SOLUTION

    VMC MODULES ENGLISH|Exercise ENABLE|100 Videos

  • LIQUID SOLUTION

    VMC MODULES ENGLISH|Exercise EFFICIENT|98 Videos

  • JEE MAIN REVISON TEST-23

    VMC MODULES ENGLISH|Exercise CHEMISTRY (SECTION 1)|25 Videos

  • LIQUID SOLUTIONS

    VMC MODULES ENGLISH|Exercise IN-CHAPTER EXERCISE -L|10 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-LIQUID SOLUTION -IMPECCABLE
  1. Assertion (A): Camphor is used as a solvent in the determination of th...

    Text Solution

    |

  2. What is the mole fraction of the solute in a 1.00 m aqueous solution ?

    Text Solution

    |

  3. Which of the following electrolytes has the same value of van't Hoff f...

    Text Solution

    |

  4. The boiling point of 0.2 mol kg^(-1) solution of X in water is greater...

    Text Solution

    |

  5. Of the following 0.10 m aqueous solutions, which one will exhibit the ...

    Text Solution

    |

  6. How many grams of concentrated nitric acid solution should be used to ...

    Text Solution

    |

  7. If excess of AgNO(3) solution is added to 100 mL of a 0.024 M solution...

    Text Solution

    |

  8. 6.02 xx 10^(20) molecules of urea are present in 100 mL of its solutio...

    Text Solution

    |

  9. p(A) and p(B) are the vapour pressure of pure liquid components A and ...

    Text Solution

    |

  10. The vapour pressure of chloroform (CHCl)(3) and dichlorocethene (CH(2)...

    Text Solution

    |

  11. 58.5 g of NaCl and 180 g of glucose were separately dissolved in 1000 ...

    Text Solution

    |

  12. Which of the following shows negative deviation from Raoult's law?

    Text Solution

    |

  13. The mass of a non-volatile solute of molar mass 40g" "mol^(-1) that sh...

    Text Solution

    |

  14. The solution which has higher osmotic pressure than some other solutio...

    Text Solution

    |

  15. The vapour pressure lowering caused by addition of 100 g of sucrose (m...

    Text Solution

    |

  16. Molarity of a given orthophosphoric acid solution is 3M. Its normality...

    Text Solution

    |

  17. 138 g of ethyl alcohol is mixed with 72 g of water. The ratio of mole ...

    Text Solution

    |

  18. In which of these solutions Raoult’s law is not applicable?

    Text Solution

    |

  19. The freezing point of 1 m NaCl solution assuming NaCl to be 100% disso...

    Text Solution

    |

  20. A solution of two liquids boils at a temperature more than the boiling...

    Text Solution

    |

  21. Choose the correct statement: When concentration of a salt solution ...

    Text Solution

    |