Home
Class 12
CHEMISTRY
When 250 mg of eugenol is added to 100 g...

When 250 mg of eugenol is added to 100 g of camphor `(k_f = 39.7 k molality^(-1))`, it lowered the freezing point by `0.62^@C`. The molar mass of eugenol is :

A

`1.6 xx 10^2 g//mol`

B

`1.6 xx 10^4 g//mol`

C

`1.6 xx 10^3 g//mol`

D

200 g/mol

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS

    PATHFINDER|Exercise QUESTION BANK|250 Videos

  • SOLUTION

    PATHFINDER|Exercise QUESTION BANK|28 Videos

  • SURFACE CHEMISTRY

    PATHFINDER|Exercise QUESTION BANK|41 Videos

Similar Questions

Explore conceptually related problems

How much quantity of ethylene glycol is added in 200 gm water to reduce the freezing point by 0.93K? Kf=1.86K. Kg mol^(-1)

When 45 g of an unknown compound was dissolved in 500 g of water, the solution has freezing point of -0.93^(@)C (i) What is the molecular weight of compound ? (K_(f)=1.86) (ii) If empirical formula is CH_(2)O , what is the molecular formula of compound ?

The vapour pressure of pure benzene at a certain temperature is 0.850 bar. A non-volatile, non-electrolyte solid weighing 0.5 g when added to 39.0 g of benzene (molar mass 78 g mol^-1 ), vapour pressure of the solution, then, is 0.845 bar. What is the moler mass of the solid substance ?

2.00 g of non=electrolyte solute dissolved in 100 g of benzene lowered the freezing point of benzene by 0.50K. The freezing point depression constant of benzene is 5.12 K kg mol^(-1) . Find out the relative molar mass of the solute.

1.00 g of a non-electrolyte dissolved in 50.5g of benzene lowered its freezing point by 0.40K. The freezing point depression constant of benzene is "5.12K.kg mol"^(-1) . Find the molecular mass of the solute.

A solution containing 0.5 g of naphthalene in 50 g C Cl_4 yield a boiling point elevation of 0.4 k, while a solution of 0.6 g of an unknown solute in the same mass of the solvent gives a boiling point elevation of 0.65 k. Find the molar mass of the unknown solute.

A solution of 1.25 g of 'P' in 50g of water lowers freezing point by 0.3^@C . Molar mass of 'P' is 94. K_f(water) is 1.86 K kg mol^(-1). The degree of association of 'P' in water is [Assume dimerisation of P]

An aqueous solution of 0.1 molal concentration of sucrose should have freezing point (k_f = 1.86 k mol^(-1) kg)

A very small amount of a nonvolatile solute (that does not dissociate) is dissolved in 56.8 cm^3 of benzene (density 0.889 g cm^-3 ). At room temperature, vapour pressure of this solution is 98.88 mm Hg while that of benzene is 100 mm Hg. Find the molality of this solution. If the freezing temperature of this solution is 0.73 degree lower than that of benzene, what is the value of molar freezing point depression constant of benzene ?

PATHFINDER-SOLUTIONS-QUESTION BANK
  1. Addition of non-volatile solute to a solvent always increases the coll...

    Text Solution

    |

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

    Text Solution

    |

  3. When 250 mg of eugenol is added to 100 g of camphor (kf = 39.7 k molal...

    Text Solution

    |

  4. Match column - I with Column - II

    Text Solution

    |

  5. Match column - I with Column - II

    Text Solution

    |

  6. Match column - I with Column - II

    Text Solution

    |

  7. The vapour pressure of two pure liquid A and B are 5 and 10 torr respe...

    Text Solution

    |

  8. The vapour pressure of a liquid solution containing A and B is 99 torr...

    Text Solution

    |

  9. Calculate elevation in boiling point for 2 molal aqueous solution of g...

    Text Solution

    |

  10. A solution containing 500 g of a protein per litre is isotonic with a ...

    Text Solution

    |

  11. An aqueous solution of urea has a freezing point of -0.515^@C. Predict...

    Text Solution

    |

  12. Calculate the concentration of NaOH solution in g/mL which has the sam...

    Text Solution

    |

  13. 10 g of solute A and 20 g of solute B both are dissolved in 500 mL of ...

    Text Solution

    |

  14. Arrange the osmotic pressure in increasing order for the following (as...

    Text Solution

    |

  15. If equal volumes of two isotonic solutions are. mixed then calculated ...

    Text Solution

    |

  16. Dry air was successively passed through a solution of 5 g solute in 80...

    Text Solution

    |

  17. A beaker containing 20 g sugar in 100 g water and another containing 1...

    Text Solution

    |

  18. A solution containing 0.5 g of naphthalene in 50 g C Cl4 yield a boili...

    Text Solution

    |

  19. Calculate the freezing point of a solution of a non-volatile solute in...

    Text Solution

    |

  20. Two liquids A and B form an ideal solution. At 300 k, the vapour press...

    Text Solution

    |