Home
Class 11
CHEMISTRY
A 3M solution of Na2S2O3 (Relative Formu...

A 3M solution of `Na_2S_2O_3` (Relative Formula Mass = 158) has density of 1.25 g/mL. Calculated its molality.

A

3.87

B

3.5

C

4.5

D

4.87

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Topper's Solved these Questions

  • HYDROGEN

    PATHFINDER|Exercise QUESTION BANK|77 Videos

  • MOLE AND STOICHIOMETRY-II

    PATHFINDER|Exercise QUESTION BANK|178 Videos

Similar Questions

Explore conceptually related problems

The density of a 3M sodium thiosulphate (Na_2S_2O_3) solution is 1.25 g/mL. Calculate the percent by weight of sodium thiosulphate.

Why is Na_2S_2O_3 used in photography?

A laboratory bottle containing conc. H_2SO_4 . If density is 1.78 g/ml. Calculate the strength of the solution is normality.

You are provided with 1 (M) solution of NaNO_(3) whose density is 1.25g/mL, So, in the solution-

10 ml of NaHC_2O_4 solution is neutralized by 10 ml of 0.1 M NaOH solution. 10 ml of same NaHC_2O_4 solution is oxidised by 10 ml of KMnO_4 solution in acidic medium. Calculate the molarity of KMnO_4 solution.

5 ml solution of H_2O_2 liberates 0.508 g iodine from an acidifoed KI solution Calculate the strength of H_2O_2 solution interms of volume strength at STP.

29.2% (wiW) HCI stock solution has density of 1.25 g mL^-1 . The molecular weight of HCl is 36.5 g mol^-1 . The volume (mL) of stock solution required to prepare a 200 mL solution 0.4 M HCI is

The density of 3(M) solution of NaCl is 1.25g*cm^(-3) calculate the molality of the solution.

Density of 3 molal NaOH solution is 1.110 g*mL^(-1) . Calculate the molarity of the solution.

100 mL of 3(N) Na_(2)CO_(3) solution is diluted to 300 mL by adding water. Calculate the normality of this solution.

PATHFINDER-MOLE AND STOICHIOMETRY-I-QUESTION BANK
  1. Equivalent weight of a bivalent metal is 37.2. The molecular weight of...

    Text Solution

    |

  2. A sample of H2SO4 (density 1.787 g mL^(-1)) is labelled as 86% by weig...

    Text Solution

    |

  3. A 3M solution of Na2S2O3 (Relative Formula Mass = 158) has density of ...

    Text Solution

    |

  4. What is the empirical formula of an oxide of vanadium, if 2,74 gm, of ...

    Text Solution

    |

  5. A gaseous compound is composed of 85.7% by mass of carbon and 14.3% by...

    Text Solution

    |

  6. 0.1 mole of a carbohydrate with empirical formula CH2O contain 1 g of ...

    Text Solution

    |

  7. One hydrated salt Na2CO3.xH2O undergoes 63% loss in mass on heating an...

    Text Solution

    |

  8. 2 gm of a sample contains mixture of SiO2 and FE2O3. The sample on ver...

    Text Solution

    |

  9. Calculated the weight of MnO2 required to produce 1.78 litre of Cl2 at...

    Text Solution

    |

  10. The volume of oxygen necessary for the complete combustion of 20 L of ...

    Text Solution

    |

  11. 2.76 g of silver carbonate on being strongly heated yield a residue we...

    Text Solution

    |

  12. A mixture of NH4NO3 and (NH4)2HPO4 contain 30.4 mass percentage of nit...

    Text Solution

    |

  13. 6.2 gm of a sample containing Na2CO3, NaHCO3 & non volatile impurity o...

    Text Solution

    |

  14. A metal M forms the sulphate M2(SO4)3 0.596 gm of the sample reacts wi...

    Text Solution

    |

  15. 100 mL of pure phosphine is decomposed to produce vapours of phosphoru...

    Text Solution

    |

  16. 11.2 litre of a gas at STP weighs 14 g. The gas could not be :

    Text Solution

    |

  17. 8 g of oxygen has same number of atoms in :

    Text Solution

    |

  18. Volume of H2SO4 acid (98% by mass, d = 1.80 g/mL) required to prepare ...

    Text Solution

    |

  19. Chloride of an element is given by the formula MClx and it is 100% ion...

    Text Solution

    |

  20. 10 g carbon (C ) reacts with 100 g of Cl2 of form C Cl4 The correct st...

    Text Solution

    |