Home
Class 12
CHEMISTRY
When conc. H2 SO4 is added to dry KNO3 b...

When conc. `H_2 SO_4` is added to dry `KNO_3` brown fumes evolve. These fumes are of

A

`SO_(2)`

B

`SO_(3)`

C

`NO`

D

`NO_(2)`

Text Solution

Verified by Experts

`2KNO_(3) +2H_(2)SO_(4) to 2KHSO_(4) + underset("Brown fumes")(4NO_(2)uarr)+2H_(2)O + O_(2)`
Promotional Banner

Topper's Solved these Questions

  • PRINCIPLES RELATED TO PRACTICAL CHEMISTRY

    DINESH PUBLICATION|Exercise Selected straight objective|24 Videos

  • PRINCIPLES RELATED TO PRACTICAL CHEMISTRY

    DINESH PUBLICATION|Exercise Assertion and reason|17 Videos

  • PRINCIPLES RELATED TO PRACTICAL CHEMISTRY

    DINESH PUBLICATION|Exercise Brain teasers-42|1 Videos

  • POLYMERS

    DINESH PUBLICATION|Exercise Matrix|5 Videos

  • PURIFICATION & CHARACTERISATION OF ORGANIC COMPOUND

    DINESH PUBLICATION|Exercise Ultimate Preparatory Package|15 Videos

Similar Questions

Explore conceptually related problems

When conc. H_2SO_4 is added to dry KNO_3 brown fumes evolve. These are of

Conc. H_2 SO_4 is not a

When conc. H_2 SO_4 was added to an unknown salt, a brown gas 'A' was evolved, On cooling this gas 'A' changed to a colour less gas 'B'. The 'A' and 'B' are:

Why conc. H_2 SO_4 cannot be used to dry hydrogen sulphide ?

An explosion takes place when conc. H_2SO_4 is added to KMnO_4 . Which of the following is formed?

DINESH PUBLICATION-PRINCIPLES RELATED TO PRACTICAL CHEMISTRY-RQ
  1. Which of the following combines with Fe(II) ions to form a brown compl...

    Text Solution

    |

  2. Which gives violet colour with borax?

    Text Solution

    |

  3. When conc. H2 SO4 is added to dry KNO3 brown fumes evolve. These fumes...

    Text Solution

    |

  4. Nessler's reagent is used to detect

    Text Solution

    |

  5. The compound insoluble in acetic acid is

    Text Solution

    |

  6. Prussian blue is formed when

    Text Solution

    |

  7. What product is formed by mixing the solution of K4 [Fe (CN)6] with th...

    Text Solution

    |

  8. A blue colouration is not obtained when

    Text Solution

    |

  9. Which of the following will not give positive chromyl chloride test?

    Text Solution

    |

  10. AgCl dissolves in ammonia solution giving

    Text Solution

    |

  11. Nitrate of all metals are

    Text Solution

    |

  12. When excess of SnCl2 is added to a solution of HgCl2, a white precipit...

    Text Solution

    |

  13. A white crystalline substance dissolves in water. On passing H2 S in t...

    Text Solution

    |

  14. Of the following sulphides which one is insoluble in dil. Acids but so...

    Text Solution

    |

  15. When chlorine water is added to an aqueous solution of potassium halid...

    Text Solution

    |

  16. When excess of dilute NH4 OH is added to an aqueous solution of copper...

    Text Solution

    |

  17. Composition of brown ring is

    Text Solution

    |

  18. Chloride of which element is coloured?

    Text Solution

    |

  19. The composition of golden spangles is

    Text Solution

    |

  20. Chromyl chloride test is performed for the confirmation of the presenc...

    Text Solution

    |