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When CO(2) is passed into aqueous:...

When `CO_(2)` is passed into aqueous:

A

`Na_(2)CrO_(4)` solution, its yeloow colour changes to orange.

B

`K_(2)MnO_(4)` solution, it disproportionates to `KMnO_(4) and MnO_(2)`.

C

`Na_(2)Cr_(2)O_(7)` solution, its orange colour changes to green.

D

`KMnO_(4)` solution, its pink colour changes to green.

Text Solution

Verified by Experts

The correct Answer is:
A, B
(A). `Na_(2)CrO_(4)overset(H^(+))toNa_(2)Cr_(2)O_(7)` (orange colour)
(B). `MnO_(4)^(2-)overset(H^(+))toMnO_(4)^(-)+MnO_(2)` in neutral or acidic medium.
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