Home
Class 12
CHEMISTRY
At pH=12,Cr(2)O(7)^(2-) changes to:...

At `pH=12,Cr_(2)O_(7)^(2-)` changes to:

A

`CrO_(3)`

B

`Cr O_(2)^(2+)`

C

`CrO_(4)^(2-)`

D

`CrO_(4)^(2+)`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • COMPOUNDS CONTAINING NITROGEN

    NIKITA PUBLICATION|Exercise MCQ|418 Videos

  • ELECTROCHEMISTRY

    NIKITA PUBLICATION|Exercise Questions From Competitive Exam|46 Videos

Similar Questions

Explore conceptually related problems

At pH = 11 , Cr_2O_7^(2-) ion changes to

In alkaline H_(2)O_(2),Cr_(2)O_(7)^(2-) changes to tetraperoxo species… having oxidation number of Cr as …

Orange colour of Cr_(2)O_(7)^(2-) ion changes to yellow when treated with an alkali. Why ?

K_(2)Cr_(2)O_(7)//H^(+) changes to green by

At 298 K, the standard reduction potential are: 1.33 V for Cr_(2)O_(7)^(2-) | Cr^(3+) , 1.36 V for Br_(2)|Br^(-) and 0.54V for I_(2)|I^(-) . At pH = 4, Cr_(2)O_(7)^(2-) is expected to oxidise? Assume [Cr^(3+)] = [Cr_(2)O_(7)^(2-)] = 1M.

Cr_(2)O_(7)^(2-)overset(pH=x)rarrCrO_(4)^(2-)overset(pH=y)rarrCr_(2)O_(7)^(2-) x and y can be :