Home
Class 12
CHEMISTRY
H2SO4 cannot be used to prepare HI from ...

`H_2SO_4` cannot be used to prepare HI from KI as :

A

Its reaction with Kl is very slow

B

It oxidises HI to iodine

C

It disproportionates HI

D

It reduces HI

Text Solution

Verified by Experts

The correct Answer is:
B
`H_2SO_4` is stonger oxidising agent and HI is stonger reducing agent. So `H_2SO_4` oxidises HI to `l_2` and is itself reduced to `SO_2`
`Nal+H_2SO_4toNaHSO_4+HI`
`HI+H_2SO_4 to I_2 + SO_2 + 2H_2O`
Promotional Banner

Topper's Solved these Questions

  • QUALITATIVE ANALYSIS PART 1

    RESONANCE|Exercise A.L.P|39 Videos

  • SOLID STATE

    RESONANCE|Exercise PHYSICAL CHEMITRY (SOLID STATE)|45 Videos

Similar Questions

Explore conceptually related problems

Sulphuric acid is considered as the king of chemicals. The prosperity of any country is measured by the amount of sulphuric acid it consumes. Sulphuric acid is, thus, a substance of very great commercial importance as it used practically ine every important industry. This is due to the following properties of sulphuric acid : (a) acidic nature (b) oxidising nature (c) dehydrating nature (d) sulphonation. Concentrated H_2 SO_4 cannot be used to prepare HBr or HI from KBr or KI because it.

Concentrated H_(2)SO_(4) cannot be used to prepare HBr from NaBr , because it ,

Conc. H_(2)SO_(4) cannot be used to prepared HBr form NaBr.

Statement-1: Conc. H_(2)SO_(4) cannot be used to prepare pure HBr from NaBr Statement-2: It reacts slowly with NaBr.

Concentrated sulphuric acid connot be used to prepare HBr or HI from KBr and KI because it

H_2SO_4 cannot be used for obttaining HBr from KBr because :

RESONANCE-RANK BOOSTER-All Questions
  1. Which of the following option is correctly matched ?

    Text Solution

    |

  2. Which of the following statements is incorrect for hydrogen peroxide ?

    Text Solution

    |

  3. H2SO4 cannot be used to prepare HI from KI as :

    Text Solution

    |

  4. Which one of the following statements regarding helium is incorrect ?

    Text Solution

    |

  5. {:(F2+dil.NaOHto A+B+C),(F2+conc.NaOHtoA+D+C):}

    Text Solution

    |

  6. Ammonia gas can evolve by heating :

    Text Solution

    |

  7. Which of the following statements regarding hydrogen peroxide is/are i...

    Text Solution

    |

  8. A solution of KBr is treated with each of the following which one woul...

    Text Solution

    |

  9. Nitrogen forms the largest number of oxides as it is capable of formin...

    Text Solution

    |

  10. Fifth group elements form hydrides to type AH(3). The hydrides have a ...

    Text Solution

    |

  11. Fifth group elements form hydrides to type AH(3). The hydrides have a ...

    Text Solution

    |

  12. How many of the following compounds has X-X bonds i.e., single coval...

    Text Solution

    |

  13. If Phosphorous acid, Tetrathionic acid and Pyrophosphoric acid have nu...

    Text Solution

    |

  14. The number of hydrogen atom(s) attached to phosphorus atom in hypophos...

    Text Solution

    |

  15. What is the sum of the oxidation state of phosphorus and number of P-O...

    Text Solution

    |

  16. How many mole of phosphine is obtained when one mole of calcuim phosph...

    Text Solution

    |

  17. In general the melting and boiling points of transition metals

    Text Solution

    |

  18. Which of the following is the most suitable description of transition ...

    Text Solution

    |

  19. Among the following the specials that is both paramagnetic and coloure...

    Text Solution

    |

  20. In which of the following oxoanions the oxidation state of central ato...

    Text Solution

    |