Home
Class 12
CHEMISTRY
The boiling point of a solution containi...

The boiling point of a solution containing 2.62 g of a substance A in 100 g of water is higher by `0.0512^(@)C` than the boiling point of pure water. The molar mass of the substance ( `K_(b)=5.12Km^(-1)` ) is :

A

131

B

2620

C

`26.2`

D

`262.`

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • UNIT TEST 4

    MODERN PUBLICATION|Exercise QUESTIONS|60 Videos
  • UNIT TEST 6

    MODERN PUBLICATION|Exercise Questions|60 Videos

Similar Questions

Explore conceptually related problems

The molality of a solution containing 0.1 mol of a substance in 100g of water is :

A solution containg 12 g of a non-electrolyte substance in 52 g of water gave boiling point elevation of 0.40 K . Calculate the molar mass of the substance. (K_(b) for water = 0.52 K kg mol^(-1))

What is the boiling point of an aqueous solution containing 0.6g of urea in 100g of water? Kb for water is 0.52 K kg mol^(-1) .

A solution containing 12.5 g of non-electrolyte solution in 175g of water gave a boiling point elevation of 0.7 k. calculate the molar mass of the solute if K_(b) for water is 0.52 K kg mol^(-1) .

If 10.0 g of a non-electrolyte dissolved in 100 g of water lowers the freezing point of water by 1.86^(@)C , the molar mass of the non-electrolyte is ( K_(f)=1.86 Km^(-1) )

The boiling point of a solution made by dissolving 12.0 g of glucose in 100 g of water is 100.34^(@)C . Calculate the molecular weight of glucose, K_(b) for water = 0.52^(@)C//m .

The boiling point of 0.1 M KCl solution is ………..than 100^(@)C .

0.15 g of a substance dissolved in 15 g of a solvent boiled at a temp. higher by 0.216^@C then that of the pure solvent. The molecular weight of the substance is ( K_b for solvent is 2. 16^@C .)

What is the freezing point of solution containing 3g of a non-volatile solute in 20g of water. Freezing point of pure water is 273K, K_(f) of water = 1.86 Kkg/mol. Molar mass of solute is 300 g/mol. T^(@)-T=K_(f)m

The freezing point of a solution containing 4.8 g of a compound in 60 g of benzene is 4.48. What is the molar mass of the compound ? ( K_(f)=5.1 Km^(-1) , freezing point of benzene =5.5^(@)C )

MODERN PUBLICATION-UNIT TEST 5 -QUESTIONS
  1. The decompostion of hydrogen peroxide in the presence of I^(-) ion has...

    Text Solution

    |

  2. Blue colour of sea water is due to

    Text Solution

    |

  3. The boiling point of a solution containing 2.62 g of a substance A in ...

    Text Solution

    |

  4. The rate constnat of a reaction :

    Text Solution

    |

  5. If K (1) and K(2) are the rate constants at temperatures T (1) and T(2...

    Text Solution

    |

  6. The hydrolysis of an ester was carried out separately with 0.1 M HCl a...

    Text Solution

    |

  7. When the concentration of a particular reactant is increased by a fact...

    Text Solution

    |

  8. A substance with initial concentration A (0) reacts according to zero ...

    Text Solution

    |

  9. The rusting of iron takes place as follows : 2H^(+) + 2e^(-) + (1)/(...

    Text Solution

    |

  10. 4.5 g of aluminium (at mass = 27. a.m. u) is deposited at cathode from...

    Text Solution

    |

  11. The reaction : A rarr B follows first order kinetics . The time taken...

    Text Solution

    |

  12. The half life of a radioisotope is 4 hr. If the initial mass of the is...

    Text Solution

    |

  13. The rate of a first order reaction is 1.5xx10^(-2) mol L^(-1) "min"^(-...

    Text Solution

    |

  14. The half life period of a zero order reaction is equal to :

    Text Solution

    |

  15. AN aqueous solution of a substacne freezes at -0.186^(@)C. The boiling...

    Text Solution

    |

  16. 0.01 M solution each of urea, common salt and Na(2)SO(4) are taken, th...

    Text Solution

    |

  17. When potassium iodide is added to silver nitrate solution. The sol for...

    Text Solution

    |

  18. If E ^(@) (Fe ^(2+)|Fe)=-0.441 V and E ^(@) (Fe ^(3+) |Fe ^(2+))=0.77 ...

    Text Solution

    |

  19. Resistance of a conductivity cell filled with a solution of an electro...

    Text Solution

    |

  20. The coulombs of electricity required for reduction of 1 mol of MnO(4)^...

    Text Solution

    |