JEE Advanced Chemistry question

Cl2 gas is passed into aqueous solution of KBr and KI and CHCl3 added. It is observed that there is

(A)Violet colour in CHCl3 layerCorrect
(B)Yellow colour in CHCl3 layer
(C)Yellow colour in aqueous layer
(D)Violet colour in aqueous layer

Answer: (A)

Solution

I⁻ is more easily oxidised (a stronger reducing agent) than Br⁻, so when Cl2 is added to a solution containing both KI and KBr, it preferentially oxidises the iodide first: Cl2 + 2KI → 2KCl + I2. The

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Question ID VK-159451