A) heating \[FeC{{l}_{3}}\]at high temperature h stream of air
B) heating iron in stream of dry chlorine
C) heating ferric oxide with hydrochloric acid
D) reacting iron with hydrochloric acid
Correct Answer: B
Solution :
Anhydrous \[FeC{{l}_{3}}\]is prepared by passing dry chlorine over heated iron. \[2Fe+\underset{(dry)}{\mathop{3C{{l}_{2}}}}\,\xrightarrow{{}}\underset{(deliquescent\,salt)}{\mathop{2FeC{{l}_{3}}}}\,\]
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