Home
Class 11
CHEMISTRY
The yellow colour solution of Na2CrO4 c...

The yellow colour solution of `Na_2CrO_4` changes of orange red on passing `CO_2` gas due to the formation of :

A

`CrO_(5)`

B

`CrO_(3)`

C

`Na_(2)Cr_(2)O_(7)`

D

`Na_(3)CrO_(8)`.

Text Solution

Verified by Experts

The correct Answer is:
C
`CO_(2)+H_(2)OtoH_(2)CO_(3)hArr2H^(+)+CO_(3)^(2-),CrO_(4)^(2-)+2H^(+)hArrCr_(2)O_(7)^(2-)("orange red")+H_(2)O`
Promotional Banner

Topper's Solved these Questions

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise National Standard Examination In chemistry|35 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise High Level Problems|2 Videos

  • D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS

    RESONANCE ENGLISH|Exercise Exercise 3|65 Videos

  • CHEMICAL EQUILIBRIUM

    RESONANCE ENGLISH|Exercise Advanced Level Problems (Part-3)(Stage-5)|2 Videos

  • GASEOUS STATE

    RESONANCE ENGLISH|Exercise ORGANIC CHEMISTRY(Hydrocarbon)|18 Videos

Similar Questions

Explore conceptually related problems

The yellow colour solution of Na_(2)CrO_(4) changes to orange red on passing CO_(2) gas due to the formation of :-

Yellow coloured solution of FeCl_(3) changes in light green when

The light yellow colour of Na_2O_2 is due to

The red colour of compound (B) is due to the formation of:

The orange colour of dichromate solution changes of blue on heating with alkalies due to the formation of chromate ions.

A solution of K _(2)CrO_(4) changes colour on being acidified. Why?

The yellow colour of chromates changes to orange on acidification due to formation of:

Ferric alum gives deep red colour with NH_(4)SCN due to the formation of :

Ferric alum gives deep red colour with NH_(4)SCN due to the formation of :

Yellow colour of chromates changes to orange on acidification due to formation of:

RESONANCE ENGLISH-D & F-BLOCK ELEMENTS & THEIR IMPORTANT COMPOUNDS -Additional Problems for Self practice (APSP)
  1. Which one of the following dissolves in hot concentrated NaOH?

    Text Solution

    |

  2. Hot copper wire reacts with oxygen to produce:

    Text Solution

    |

  3. A compound is yellow when hot and white when cold. The compound is:

    Text Solution

    |

  4. At 300 C FeCl(3):

    Text Solution

    |

  5. When FeSO(4) is strongly heated, the number of acidic gases produced i...

    Text Solution

    |

  6. On heating ZnCl(2).2H(2)O, the compounds obtained is:

    Text Solution

    |

  7. On heating KMnO(4), one among the following is not formed:

    Text Solution

    |

  8. Reaction of KMnO(4) in neutral or very weakly alkaline solution can be...

    Text Solution

    |

  9. KMnO(4) in excess on treatment with concentrated H(2)SO(4) forms a com...

    Text Solution

    |

  10. Which of the following statement is wrong?

    Text Solution

    |

  11. The image on an exposed and developed photographic film is due to

    Text Solution

    |

  12. The yellow colour solution of Na2CrO4 changes of orange red on passin...

    Text Solution

    |

  13. What happens when a molten mixture of K(2)FeO(4) and K(2)CrO(4) is aci...

    Text Solution

    |

  14. Why silver chloride is used in photochromic spectacles?

    Text Solution

    |

  15. In which of the following reactions, reaction of silver with the given...

    Text Solution

    |

  16. Which of the following can be employed for the conversion of potassium...

    Text Solution

    |

  17. Reaction of potassium chromate and CuSO(4) in aqueous solution produce...

    Text Solution

    |

  18. Predict the product formed and its colour: When MnO2 is fused with KO...

    Text Solution

    |

  19. Transuranic elements begin with

    Text Solution

    |

  20. Lanthanide contraction is observed in:

    Text Solution

    |