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On passign CI(2) water in a mixture of K...

On passign `CI_(2)` water in a mixture of KBr and KI solution in contact with `C CI_(4)` continuously with occasional shakinh, we observe

A

Orange `C CI_(4)` layer changing to violet

B

Persisting violet `C CI_(4)` layer

C

Persisting brown layer

D

Violet layer changing into brown and finally colourless

Text Solution

Verified by Experts

The correct Answer is:
D
`CI_(2)+2I^(Theta)rarr 2CI+I_(2)Theta`
`CI_(2)+2Br^(Theta)rarr Br_(2)+2CI^(Theta)`
Oxidising agent: `CI_(2)gtBr_(2)I_(2)`
Hence, `CI_(2)` oxidises `I^(Theta)` first to `I_(2)` which gives violet colour in `C CI_(4)`, then `Br_(2)^(Theta)rarr Br_(3)`, which gives bron colour in `C CI_(4)`, finally `I_(2)` is oxidised to `IO^(Theta)`. Hence, the `C CI_(4)` layer turns colourless.
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CENGAGE CHEMISTRY ENGLISH-P-BLOCK GROUP 17 ELEMENTS - THE HALOGEN FAMILY-Exercises (Single Correct)
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