Home
Class 12
CHEMISTRY
5 g of Na(2)SO(4) was dissolved in x g o...

5 g of `Na_(2)SO_(4)` was dissolved in x g of `H_(2)O` . The change in freezing point was found to be `3.82^(@)C` . If `Na_(2)SO_(4)` is `81.5%` ionised , the value of x
(`k_(f)` for water =`1.86^(@)C` kg `"mol"^(-1)`) is apporximately :
(molar mass of S=32 g `"mol"^(-1)` and that of Na=23 g `"mol"^(-1)`)

A

15 g

B

25 g

C

45 g

D

65 g

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • MOCK TEST 8

    KVPY PREVIOUS YEAR|Exercise EXERCISE|24 Videos

  • QUESTION PAPER 2013

    KVPY PREVIOUS YEAR|Exercise PART-II ( CHEMISTRY)|10 Videos

Similar Questions

Explore conceptually related problems

If 13.1g of Na_(2) SO_(4) XH_(2)O contains 6g of H_(2)O , the value of X is

What should be the freezing point of aqueous solution containing 17g of C_(2)H(5)OH is 1000g of water ( K_(f) for water = 1.86 deg kg mol^(-1) )?

KVPY PREVIOUS YEAR-MOCK TEST 9-EXERCISE
  1. Gas A is bubbled through slaked lime when a white precipitate is forme...

    Text Solution

    |

  2. Cellulose upon acetylation with excess acetic anhydride/H(2)SO(4) (cat...

    Text Solution

    |

  3. On addition of increasing amount of AgNO3 to 0.1 M each of NaCl and Na...

    Text Solution

    |

  4. 5 g of Na(2)SO(4) was dissolved in x g of H(2)O . The change in freezi...

    Text Solution

    |

  5. Passing H(2)S gas into a mixture of Mn^(2+), Ni^(2+), Cu^(2+) and Hg^(...

    Text Solution

    |

  6. When 2 g of a gas A is introduced into an evacuated flask kept at 25^(...

    Text Solution

    |

  7. Which of the following componds does not evolve oxygen when heated alo...

    Text Solution

    |

  8. Equimolar solutions of the following substances were prepared separate...

    Text Solution

    |

  9. n-Propyl benzene can be obtained in quantitative yield by following me...

    Text Solution

    |

  10. A solution of ( + )-1-chloro-1-phenylethane in t toluene racemises slo...

    Text Solution

    |

  11. At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air...

    Text Solution

    |

  12. The compression factor (compressibility factor) for 1 mol of a van der...

    Text Solution

    |

  13. Two reactants A and B separately shows two chemical reactions.Both rea...

    Text Solution

    |

  14. Compounds [Cu(H2O)6]^(2+)(A) and [Ti(H2O)6]^(3+) (B) exhibit tetragona...

    Text Solution

    |

  15. A gas undergoes a process such that pprop1/T. If the molar heat capaci...

    Text Solution

    |

  16. The decomposition of N(2)O(5) according to the equation: 2N(2)O(5)(g) ...

    Text Solution

    |

  17. Arrange the wavelengths (lambda) of the following emission lines of H-...

    Text Solution

    |

  18. Which of the following expression for % dissociation of a monoacidic b...

    Text Solution

    |

  19. The final product Z in the following reaction is

    Text Solution

    |

  20. Which of the following species contains minimum number of atoms in XY ...

    Text Solution

    |