Home
Class 11
CHEMISTRY
The hardness of water sample containing ...

The hardness of water sample containing `0*002` mole of magnesium sulphate dissolved in a litre of water is expressed as

A

20 ppm

B

200 ppm

C

2000 ppm

D

120 ppm

Text Solution

Verified by Experts

The correct Answer is:
B
`10^(6)` g water contains `(xx(0.002xx1000)"mol MgSO"_(4)`
1 mol `MgSO_(4)~=1` mol `CaCO_(3)`
`:.` 2 mol `MgSO_(4)~= 2` mol `CaCO_(3)`, i.e., `2 xx 100 g CaCO_(3)`
`:.` Hardness of water = 200 ppm]
Promotional Banner

Topper's Solved these Questions

  • SOLUTIONS (GENERAL AND COLLIGATIVE PROPERTIES)

    OP TANDON|Exercise Practice Problem|66 Videos

  • SOLUTIONS (GENERAL AND COLLIGATIVE PROPERTIES)

    OP TANDON|Exercise Set-1 (Level-A)|190 Videos

  • SOLUTIONS (GENERAL AND COLLIGATIVE PROPERTIES)

    OP TANDON|Exercise MISC Examples|26 Videos

  • PROBLEMS BASED UPON STRUCTURES AND REACTIONS OF ORGANIC COMPOUNDS

    OP TANDON|Exercise Some Solved Problems|21 Videos

  • STATES OF MATTER (GASES AND LIQUIDS)

    OP TANDON|Exercise Self Assess,ent|28 Videos

Similar Questions

Explore conceptually related problems

100g of a water samples is found to contain 12 mg of MgSO_(4) calculate the hardness of water sample.

Hardness of water is due to dissolved impurities of

Hard water does not contain :-

OP TANDON-SOLUTIONS (GENERAL AND COLLIGATIVE PROPERTIES)-Illustrations
  1. How many Na^(+) ions are present in 50mL of a 0.5 M solution of NaCl ?

    Text Solution

    |

  2. Density of 2.05 M solution of acetic acid in water is 1.02g//mL. The m...

    Text Solution

    |

  3. The hardness of water sample containing 0*002 mole of magnesium sulpha...

    Text Solution

    |

  4. The density ("in" g mL^(-1)) of a 3.60 M sulphuric acid solution that ...

    Text Solution

    |

  5. 1 litre solution containing 490 g of sulphuric acid is diluted to 10 l...

    Text Solution

    |

  6. 250 mL of a Na(2)CO(3) solution contains 2.65 g of Na(2)CO(3).10mL of ...

    Text Solution

    |

  7. The volumes of two HCl solution A (0.5 M) and B (0.1M) to be mixed for...

    Text Solution

    |

  8. Mole fraction of component A in vapour phase is chi(1) and that of com...

    Text Solution

    |

  9. Vapour pressure of pure A(p(A)^(@))=100 mm Hg Vapour pressure of pur...

    Text Solution

    |

  10. The vapour pressure of a certain pure liquid A at 298 K is 40 mbar. Wh...

    Text Solution

    |

  11. 100 mL of liquid A and 25 mL of liquid B are mixed to form a solution ...

    Text Solution

    |

  12. The vapour pressure of pure benzene at 88^(@)C is 957 mm and that of ...

    Text Solution

    |

  13. At 25^(@)C, the total pressure of an ideal solution obtained by mixing...

    Text Solution

    |

  14. The mass of glucose that would be dissolved in 50g of water in order t...

    Text Solution

    |

  15. The vapour pressure of pure benzene and toluene are 160 and 60 mm Hg r...

    Text Solution

    |

  16. The vapour pressure of water at 23^(@)C is 19.8 mm. 0.1 mole glucose i...

    Text Solution

    |

  17. What is the vapour pressure of the solution containting 34.2g of sucro...

    Text Solution

    |

  18. The lowering of vapour pressure due to a solute in a 1 m aqueous solut...

    Text Solution

    |

  19. Calculate the mass of a non-volatile solute ( molecular mass 40) which...

    Text Solution

    |

  20. 3g urea is dissolved in 45g of water. The relative lowering of vapour ...

    Text Solution

    |