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4K(2) Cr(2) O(7) overset(heat)rarr 4K(2)...

`4K_(2) Cr_(2) O_(7) overset(heat)rarr 4K_(2) CrO_(4) + 3O_(2) + X`. In the above reaction `X` is

A

`CrO_(3)`

B

`Cr_(2)O_(7)`

C

`Cr_(2)O_(3)`

D

`CrO_(5)`

Text Solution

Verified by Experts

The correct Answer is:
C
Potassum dichromate, on heating gives oxygen and chormic oxide `(Cr_(2)O_(3))`
`4k_(2)Cr_(2)O_(7) overset(Delta)rarr4K_(2)CrO_(4)+3O_(2)uarr+2Cr_(2)O_(3)`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-D - AND F-BLOCK ELEMENTS-Practice exercise (Exercise 1)
  1. Potassium dichromate is used

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  2. The bonds present in the structure of dichromate ion are

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  3. 4K(2) Cr(2) O(7) overset(heat)rarr 4K(2) CrO(4) + 3O(2) + X. In the ab...

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  4. When MnO(2) fused with KOH, a coloured compound is formed . The produc...

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  5. Which of the oxide of manganese is amohoteric

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  6. Consider the following statements. I. As the oxidation number of a m...

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  7. A blue solution of copper sulphate becomes darker when treated with ex...

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  8. 2mNo(4)^(2-)+cl (2) rarr Mn^(2+)+5Fe^(3+) MnO(4)^(2-) can be conver...

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  9. One mole of FeC(2)O(4) is oxidised by KMnO(4) in acidic medium. Number...

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  10. Acidified potassium permanganate soultion is decoloursied by

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  11. KMnO(4) in basic medium is used as

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  12. The atomic number of V,Cr, Mn and Fe are respectively 23,24,25 and 26....

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  13. In the following figure the Cr-O-Cr bond angle is of X^(o). What is th...

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  14. Acidified KMnO(4) can be decolourised by:

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

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  16. KMnO(4) forms dark purple crystals, which are isostructural with those...

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  17. In alkaline H(2)O(2),Cr(2)O(7)^(2-) changes to tetraperoxo species… ha...

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  18. K(2)Cr(2)O(7)//H^(+) changes to green by

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  19. An explosion takes place when conc. H2SO4 is added to KMnO4. Which of ...

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  20. The outer electronic configuration of Gd (At.No. 64) is

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