Home
Class 11
CHEMISTRY
Dissolving 120 g of urea (mol wt . 60) i...

Dissolving 120 g of urea (mol wt . 60) in 1000 g of water gave a solution of densit 1.15 g/mL. The molarity of the solution is

A

`1.78 M`

B

`2.00 M `

C

`2.05 M`

D

`2.22 M`

Text Solution

Verified by Experts

The correct Answer is:
C
`V _(sol) = (120 + 1000)/( 1.15) ML, M = ( W _(2) xx 1000)/( M w _(2) xx V _(sol)) = (120 xx 1000)/( 60 xx (1120)/(1.15)) = ( 2xx 115)/(112) = 2. 05 M`
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-II|50 Videos

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Single Correct Answer Type)|14 Videos

  • SOME BASIC CONCAPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|6 Videos

  • S-BLOCK ELEMENTS

    BRILLIANT PUBLICATION|Exercise LEVEL-III (Linked Comprehension Type)|9 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    BRILLIANT PUBLICATION|Exercise LEVEL-I|55 Videos

Similar Questions

Explore conceptually related problems

A given solution of NaOH contains 2.00 g of NaOH per litre of solution. Calculate the molarity of this solution?

A solution is prepared by dissolving 4 g of NaOH to give 500 ml of it. Calculate the molarity of the solution.

A solution contains 441.0 gof H_2SO_4 in 1 L of solution. If the density of solution is "1.25 g mL"^(-1), the molarity and molality of the solution, respectively, are

If the elevation in boiling point of a solution of 10g of solute (mol. Wt. = 100) in 100g of water is DeltaT_(b) , the ebullioscopic constant of water is

An antifreeze solution is prepared from '222.6 g' of ethylene glycol '(C, H_6 O_2)' and '200 g' of water. Calculate the molality of the solution. If the density of the solution is '1.072 gmL^-1,' then what shall be the-molarity of the solution?

A solution is prepared by dissolving 10g NaOH to give1250 mL it. Then what is the molarity of the solution

Dry air was passed successively through a solution of 5 g of a solute in 180 g of water and then through pure water. The loss in the weight of solution was 2.50 g and that of pure solvent 0.04 g. The molecular weight of the solute is.

BRILLIANT PUBLICATION-SOME BASIC CONCAPTS OF CHEMISTRY -LEVEL-I
  1. How many moles of electrons weigh one kilogram?

    Text Solution

    |

  2. 36.5% HCl has density equal to 1.20gmL^(-1). The molarity (M) and mola...

    Text Solution

    |

  3. Dissolving 120 g of urea (mol wt . 60) in 1000 g of water gave a solut...

    Text Solution

    |

  4. If air contains 71%N(2) by volume, the number of atoms of nitrogen per...

    Text Solution

    |

  5. 8.6 g of an element when treated with excess of acid produce 1900ml of...

    Text Solution

    |

  6. Molarity of 560 g pure H(2)O at 4^(@)C is

    Text Solution

    |

  7. The mass of 60% HCI required for the netralisation of 10L of 0.1 MKOH ...

    Text Solution

    |

  8. Cortisone is a molecular substance containing 21 atoms of carbon per m...

    Text Solution

    |

  9. A sample of ammonium phosphate (NH(3))(4) PO(4) contains 3.18 moles of...

    Text Solution

    |

  10. Consider the following laws of chemical combination with examples: I...

    Text Solution

    |

  11. 1 g" urea "(NH(2)CO NH(2)), 1g acetic acid (CH(3) COOH) and 1g of form...

    Text Solution

    |

  12. The molarity of a solution obtained by mixing 750mL of 0.5 M HCl with ...

    Text Solution

    |

  13. 40% W"/"V NaCl solution (specific gravity =1.12) is equivalent to : ...

    Text Solution

    |

  14. In compound A, 1.0 g nitrogen combines with 0.57 g of Oxygen. In compo...

    Text Solution

    |

  15. Which one of the phrases would be incorrect to use?

    Text Solution

    |

  16. Which one of the best example of law of conservation of mass?

    Text Solution

    |

  17. Number of atoms present in 4.25g of 'NH3' is

    Text Solution

    |

  18. 3g of a hydrocarbon on combustion in excess of oxygen produces 8.8 g" ...

    Text Solution

    |

  19. A metal oxide is reduced by heating it in a stream of hydrogen. It is ...

    Text Solution

    |

  20. The volume occupied by one molecule of water (density = 1 gcm^(-3))

    Text Solution

    |