Home
Class 12
CHEMISTRY
Why does conc. HNO(3) acquire a yello...

Why does conc. `HNO_(3)` acquire a yellowish colour in the presence of sunlight ?

Text Solution

Verified by Experts

Colourless `HNO_(3)` dissociates in the presence of sunlight to give brown `NO_(2)` gas which dissolves in the acid and turns it yellowish.
Promotional Banner

Topper's Solved these Questions

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SHORT ANSWER TYPE (SA)|131 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise SLOVED WBCHSE SCANNER|31 Videos

  • P-BLOCK ELEMENTS

    CHHAYA PUBLICATION|Exercise PRACTICE SET 7 (ANSWER THE FOLLOWING QUESTIONS) : -|17 Videos

  • ORGANIC CHEMISTRY : BASIC PRINCIPLES AND TECHNIQUES

    CHHAYA PUBLICATION|Exercise WARM UP EXERICSE|132 Videos

  • POLYMERS

    CHHAYA PUBLICATION|Exercise SOVLED CBSE SCANNER|18 Videos

Similar Questions

Explore conceptually related problems

Why does sodium impart yellow colour in the flame?

Why does the white precipitate of silver halide become coloured in the presence of dye eosin

Why does table salt, some times appear yellow in colour?

Why does O_(3) act as a powerful oxidising agent?

Conc. HNO_(3) is added to FeSO_(4) solution in presence of H_(2)SO_(4) .

In contact with conc. HNO_(3) skin turns yellow because -

What happens when CHCl_3 reacts with oxygen in presence of sunlight?

What is chlorine - water ? Why does chlorine water lose its yellow colour when left undisturbed ?

Why does NH_(3) act as a Lewis base?

CHHAYA PUBLICATION-P-BLOCK ELEMENTS-VERY SHORT ANSWER TYPES (VSA )
  1. Identify the oxides of nitrogen obtained in each of the following...

    Text Solution

    |

  2. Name an oxide of nitrogen that reacts with water to produce tow ...

    Text Solution

    |

  3. Why does conc. HNO(3) acquire a yellowish colour in the presence ...

    Text Solution

    |

  4. Which compound is responsible for the brown ring obtained in the...

    Text Solution

    |

  5. Arrage red, white and black phosphours in the order of their decr...

    Text Solution

    |

  6. Which compound is involved in the formation of vortex ring or ph...

    Text Solution

    |

  7. How can you prove that PH(3) is basic in nature ?

    Text Solution

    |

  8. PCI(3) fumes in moist air - why ?

    Text Solution

    |

  9. Give example of oxoacids of phosphours having the oxidation state ...

    Text Solution

    |

  10. Hypophorus acid has reducing property but phosphoric acid does not - ...

    Text Solution

    |

  11. What happens when chloroform is allowed to react with concentrated...

    Text Solution

    |

  12. Write the reaction between calcium cyanamide with steam.

    Text Solution

    |

  13. Which compound reacts with NH(3) to give black precipitate ?

    Text Solution

    |

  14. Complete the chemial equation: Ca(3)(PO(4))(2) + SiO(2) + C overset...

    Text Solution

    |

  15. Distingusih between HN(3) and NH(3).

    Text Solution

    |

  16. Give two example of non-aqueous solvents.

    Text Solution

    |

  17. Write down the name of a nitrogenous fertilize.

    Text Solution

    |

  18. Which nitrogenous gas is used in the perparation of nitric acid ...

    Text Solution

    |

  19. How can it easily proved that ammonia is alkaline in nature ?

    Text Solution

    |

  20. What is obatined when excess of ammonia solution is added to a C...

    Text Solution

    |