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Question

Anhydrous ferric chloride is prepared by:


A

Heating hydrated ferric chloride at a high temperature in a stream of air.

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B

Heating metallic iron in a stream of dry chlorine gas.

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C

Reaction of ferric oxide with hydrochloric acid.

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D

Reaction of metallic iron with hydrochloric acid.

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Solution

The correct option is B

Heating metallic iron in a stream of dry chlorine gas.


In order to prepare, Anhydrous iron(III) chloride, we start with iron filings and heat it is a stream of dry chlorine gas.
The reaction for this process is as given below.
2 Fe(s) + 3 Cl2(g) → 2 FeCl3(s)


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