Home
Class 11
CHEMISTRY
An impure sample of sodium oxalate (Na(2...

An impure sample of sodium oxalate `(Na_(2)C_(2)O_(4)` weighing 0.20 g is dissolved in aqueous solution of `H_(2)SO_94)` and solution is titrated at `70^(@)C`,requiring 45 mL of 0.02 M `KMnO_(4)` solution. The end point is overrun, and back titration in carried out with 10 mL of 0.1 M oxalic acid solution.Find the purity of `Na_(2)C_(2)O_(4)` in sample:

A

75

B

83.75

C

90.25

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 2 (Q.31 To Q.35)|5 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 3 - Passage|18 Videos

  • STOICHIOMETRY

    NARENDRA AWASTHI|Exercise Level 1 (Q.181 To Q.200)|20 Videos

  • SOLID STATE

    NARENDRA AWASTHI|Exercise Level 3 - Subjective Problems|1 Videos

  • THERMODYNAMICS

    NARENDRA AWASTHI|Exercise Level 3 - Match The Column|2 Videos

Similar Questions

Explore conceptually related problems

A sample of Na_(2)CO_(3).H_(2)O weighing 0.62 g is added to 10 ml of 0.1 N H_(2)SO_(4) solution . The resulting solution will be

A sample of Na_(2)CO_(3).H_(2)O weighing 0.62 g is added to 100 mL of 0.1 N H_(2)SO_(4) . The resulting solution will be

20 ml of 0.02 M KMnO_(4) was required to completely oxidise 10 ml of oxalic acid solution. What is the molarity of the oxalic acid solution ?

Number of molecules of oxalic acid (H_2 C_2 O_4) in 100 mL of 0.02 N oxalic acid solution are:

If 1.34g Na_(2)C_(2)O_(4) is dissolved in 500 mL of water and this solution is titrated with M/10 KMnO_(4) solution in acidic medium, the volume of KMnO_(4) used is :

1.8 g of oxalic acid (H_(2)C_(2)O_(4)) is dissolved in 200 mL of a solution. Find out the molarity of the resultant solution.

NARENDRA AWASTHI-STOICHIOMETRY-Level 2 (Q.1 To Q.30)
  1. A 0.6gm sample consisting of only CaC(2)O(4) and MgC(2)O(4) is heated ...

    Text Solution

    |

  2. A metal M forms the sulphate M(2)(SO(4))(3). A 0.596 gram sample of t...

    Text Solution

    |

  3. Urea(H(2)NCONH(2)) is manufactured by passing CO(2)(g) through ammonia...

    Text Solution

    |

  4. 11.6 g of an organic compound having formula (C(n)H(2n+2)) is burnt in...

    Text Solution

    |

  5. H(2)O(2)+2KIoverset(40% "yield")rarrI(2)+2KOH H(2)O(2)+2KMnO(4)+3H(2...

    Text Solution

    |

  6. SO(2)Cl(2) (sulphuryl chloride ) reacts with water to given a mixture ...

    Text Solution

    |

  7. 5 g sample contain only Na(2)CO(3) and Na(2)SO(4) . This sample is dis...

    Text Solution

    |

  8. 20 mL of 0.2 M NaOH(aq) solution is mixed with 35 mL of this 0.1 ML N...

    Text Solution

    |

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

    Text Solution

    |

  10. Two elements A and B combine chemically to from compounds combinin...

    Text Solution

    |

  11. The conversion of oxygen to ozone occurs to the extent of 15% only. Th...

    Text Solution

    |

  12. RH(2) (ion exchange resin) can replace Ca^(2+) ions in hard water as R...

    Text Solution

    |

  13. 100 cm^(3) of a solution of an acid (Molar mass =98) containing 29.4 g...

    Text Solution

    |

  14. 20 mL of 0.1 M solution of compound NaCO(3).NaHCO(3).2H(2)O is titrate...

    Text Solution

    |

  15. A sample containing HAsO(2) (mol. Mass=108) and weighing 3.78 g is dis...

    Text Solution

    |

  16. A mixture of FeO and Fe(2)O(3) is completely reacted with 100 mL of 0...

    Text Solution

    |

  17. To a 10mL, 1M aqueous solution of Br(2), excess of NaOH is added so th...

    Text Solution

    |

  18. 0.10 g of a sample containing CuCO(3) and some inert impurity was diss...

    Text Solution

    |

  19. 1 mole of equimolar mixture of ferric oxalate and ferrous oxalate requ...

    Text Solution

    |

  20. An impure sample of sodium oxalate (Na(2)C(2)O(4) weighing 0.20 g is d...

    Text Solution

    |