• # question_answer 20) If $C{{l}_{2}}$ gas is passed into aqueous solution of $KI$ containing some $CC{{l}_{4}}$ and the mixture is shaken, then". A)  Upper layer becomes violetB)  Lower layer becomes violetC)  Homogenous violet layer is formedD)  None

$2KI+C{{l}_{2}}\to 2KCl+{{I}_{2}}$ ${{I}_{2}}+CC{{l}_{4}}\to$ Violet Colour Note: The excess of $C{{l}_{2}}$ should be avoided. The layer may become colorless due to conversion of ${{I}_{2}}$ to $HI{{O}_{3}}$ ${{I}_{2}}+5C{{l}_{2}}+6{{H}_{2}}O\to 2HI{{O}_{3}}+10HCl$ In case of $B{{r}_{2}};$ $B{{r}_{2}}+2{{H}_{2}}O+C{{l}_{2}}\to 2HBrO+2HCl$