Home
Class 11
CHEMISTRY
A sample containing HAsO(2) (mol. Mass=1...

A sample containing `HAsO_(2)` (mol. Mass=108) and weighing 3.78 g is dissolved and diluted to 250 mL in a volumetric flask. A 50 mL sample (aliquot) is withdrawn with a pipet and titrated with 35 mL of 0.05 M solution of `I_(2)`. Calculate the percentage `HAsO_(2)` in the sample :

A

25

B

20

C

0.1

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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 pynolusite (MnO_(2)) weights 0.5 gm. To this solutioin 0.594 gm As_(2)O_(3) and a dilute acid are added. After the reaction has stopped As^(+3) is AS_(2)O_(3) is titrated with 45 mlof M/50 KMn_(4) solution. Calculate the percentage of MnO_(2) in pyrolusite.

4.5g of urea (molar mass = 60g "mol"^(-1) ) are dissolved in water and solution is made to 100 ml in a volumetric flask. Calculate the molarity of solution.

Calculate the mass of Na_(2)CO_(3) required to prepare 250 ml of 0.5 N solution.

CS_2 is a colourless, highly inflammable liquid used in the manufacture of rayon and cellophane. A sample contains 0.0205 mol CS_2 . Calculate the mass of CS_2 in the sample.

0.63 grams of a dioic acid required 50mL of 0.2M NaOH for neutralisation. Calculate the molar mass of acid .

20 gm of sample Ba(OH)_(2) is dissolved in 10 ml of 0.5 N HCl solution, The excess of HCl was titrated with 0.2 NaOH. The volume of NaOh used was 10 mol. Calculate the % of Ba(OH)_(2) in the sample.

A sample of NaOH weighing 0.4 g. is added to 100 ml of 0.1N H_2SO_4 solution. The nature of the resulting solution is

30ml of sample of hydrogen peroxide solution after acidification with dil. H_2SO_4 required 30ml of 0.02M KMnO_4 solution for complete oxidation. Calculate molarity and percentage strength of the solution.

10.6 g Na_2CO_3 are dissolved in water to give 2 M solution. What is the volume of the solution in ml?

20ml of hydrogen peroxide solution is added to excess of acidified KI solution. The iodine so liberated requires 20ml of 0.1M hypo solution. Calculate the molarity and percentage strength of H_2O_2 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. H2O2 + 2KI overset("40% yield")to I2 + 2KOH H2O2 + 2KMnO4 + 3H2SO...

    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 X (at.mass 16) ard Y (at. mass 14) combine to form compou...

    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. 0.10g of a sample containing CuCo3 and some inert impurity was dissolv...

    Text Solution

    |

  19. 1 mol of equimolar mixture of ferric oxalate and ferrous oxalate will ...

    Text Solution

    |

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

    Text Solution

    |