A) Alcohol
B) Chloroform
C) Sodium hydroxide
D) Potassium iodide
Correct Answer: D
Solution :
Iodine has the least affinity for water and is only slightly soluble in it. However, it dissolves in \[10\,%\] aq. Solution of KI due to the formation of a complex ion, i.e., \[2NaCl+2{{H}_{2}}O\,\,\to \,\,2NaOH\,\,+\,\,\underset{(anode)}{\mathop{C{{l}_{2}}}}\,\,\,+\,\,\underset{(cathode)}{\mathop{{{H}_{2}}}}\,\] \[{{I}_{2}}+KI\rightleftharpoons K{{I}_{3}}\,\,or\,\,{{I}_{2}}+{{I}^{-}}\rightleftharpoons \,I_{3}^{-}\,(complex\,\,ion)\]
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