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Question
Outline the steps required to convert hydrogen chloride to anhydrous iron (III) chloride. Write the equations for the reactions.
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Solution
\[\ce{MnO2 + 4HCI(conc) -> MnCI2 + CI2 + 2H2O}\].
Chlorine thus obtained is derived by passing through concentrated Sulphuric acid. This dried chlorine is passed over heated Iron to get anhydrous Iron (III) chloride.
\[\ce{2Fe(heated) + 3CI2(dry) -> 2FeCI3 }\]
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