Home
Class 12
CHEMISTRY
Permanent hardness is due to CI^(ɵ) and ...

Permanent hardness is due to `CI^(ɵ)` and `SO_4^(2-)` of `Mg^(2+)` and `Ca^(2+)` and is removed by adding `Na_2CO_3`.
`{:(CaSO_(4)+Na_(2)CO_(3)toCaCO_(3)+Na_(2)SO_(4)),(CaCl_(2)+Na_(2)CO_(3)toCaCO_(3)+2NaCl):}` Which of the following statements is`//`are correct?

A

56

B

98

C

40

D

23

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • SOME BASIC CONCEPTS OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - D|28 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - E|28 Videos

  • SOME BASIC CONCEPTS OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise IN - CHAPTER EXERCISE - B|9 Videos

  • SOME BASIC CONCEPT OF CHEMISTRY

    VMC MODULES ENGLISH|Exercise IMPECCABLE|49 Videos

  • STATES OF MATTER

    VMC MODULES ENGLISH|Exercise IMPECCABLE|50 Videos

Similar Questions

Explore conceptually related problems

CaCl_(2)+Na_(2)SO_(4)toCaSO_(4)↓+2NaCl

BaSO_(4) darr+Na_(2)CO_(3) to BaCO_(3)darr+Na_(2)SO_(4)

BaSO_(4) darr+Na_(2)CO_(3) to BaCO_(3)darr+Na_(2)SO_(4)

Ca(OH)_(2)+CO_(2)toCaCO_(3)darr+2H_(2)O

Ca(OH)_(2)+CO_(2)toCaCO_(3)darr+2H_(2)O

CaCl_(2)+Na_(2)SO_(4)to No reaction

Na_(2)CO_(3)+PbSO_(4) to PbCO_(3) darr+Na_(2)SO_(4)

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

CaCl_(2)+Na_(2)C_(2)O_(4) to CaC_(2)O_(4)darr+2NaCl

Na_(2)CrO_(4)+HCl to H_(2)Cr_(2)O_(7)+Na_(2)SO_(4)

VMC MODULES ENGLISH-SOME BASIC CONCEPTS OF CHEMISTRY-IN - CHAPTER EXERCISE - C
  1. How many molecules of water are present as water of crystallisation in...

    Text Solution

    |

  2. The volume in litres of CO(2) liberated at STP when 10 grams of 90% pu...

    Text Solution

    |

  3. In the reaction 4A + 2B + 3C to A4B2C3, the number of moles of product...

    Text Solution

    |

  4. The mass of sodium hydroxide produced when "175.5 g of NaCl" reacts wi...

    Text Solution

    |

  5. 30g Mg and 30g O(2) are reacted and the residual mixture contains:

    Text Solution

    |

  6. Calculate the mass of lime (CaO) obtained by heating 200kg of 95% pure...

    Text Solution

    |

  7. A silver coin weighing 11.34 g was dissolved in nitric acid When sodiu...

    Text Solution

    |

  8. Consider the following reaction sequence: S(8)(s) + 8O(2)(g) to 8SO(...

    Text Solution

    |

  9. 4Fe+3O(2) rarr 2Fe(2)O(3) (reference to iron )

    Text Solution

    |

  10. 30 ml of a mixture of oxygen (O(2)) and ozone (O(3)) was heated till o...

    Text Solution

    |

  11. Polythene can be produced from calcium carbide according to the follow...

    Text Solution

    |

  12. The density of liquid ethanol is 0.7892 g/ml at 20^@ C. If 1.2 mol of ...

    Text Solution

    |

  13. 200 ml of an aqueous solution of glucose (C(6)H(12)O(6)) has molarity ...

    Text Solution

    |

  14. The normality of HCl solution with a density of 1.19gm/ml containing 3...

    Text Solution

    |

  15. 10L of hard water required 5.6g of lime for removing hardness. Hence t...

    Text Solution

    |

  16. Permanent hardness is due to CI^(ɵ) and SO4^(2-) of Mg^(2+) and Ca^(2+...

    Text Solution

    |

  17. Equal moles of water and user are taken in a flask. What is mass perce...

    Text Solution

    |

  18. Hardness of water is 200 ppm. The normality and molarity of CaCO3 in t...

    Text Solution

    |

  19. 50 ml of water sample requires 10 ml of (M)/(50)HCl for complete neutr...

    Text Solution

    |

  20. The density of the solution of a salt X is 1.15 "g mL"^(-1). 20 mL of ...

    Text Solution

    |