Can Fe2O3 Be Reconverted from FeCl3 Using NaOH and Heat?

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SUMMARY

The discussion focuses on the reconversion of Fe2O3 from FeCl3 using sodium hydroxide (NaOH) and heat. It establishes that Fe2O3 is soluble in hot hydrochloric acid (HCl), yielding FeCl3. The proposed method involves hydrolyzing FeCl3 with NaOH, which precipitates iron hydroxide and generates heat, facilitating the conversion back to Fe2O3 upon drying and further heating in an oven. This process can also be applied to enrich Fe2O3 from complex mixtures.

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  • Understanding of chemical reactions involving acids and bases
  • Knowledge of iron compounds, specifically Fe2O3 and FeCl3
  • Familiarity with precipitation reactions and hydrolysis
  • Basic laboratory techniques for heating and drying chemical substances
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  • Research the hydrolysis of FeCl3 and its implications in chemical processes
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  • Explore methods for enriching Fe2O3 from complex mixtures
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Chemists, materials scientists, and students studying inorganic chemistry, particularly those interested in iron compounds and their transformations.

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fe2O3 is soluble in hot HCl and it gives FeCl3. How can you get Fe2O3 back? could that be used to enrich Fe2O3 from a complex mixture?

Is there any way to convert Fe2O3 in Fe (NO3)3?
 
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Hydrolysis of FeCl3, followed by heating should work.

Is there any way to convert Fe2O3 in Fe (NO3)3

Can you think of an obvious way using an acid?
 
Reacting the Iron (III) Chloride solution with Sodium Hydroxide should precipitate out Iron Hydroxide as well as give off heat. The heat produced during the reaction should then convert some of the Iron Hydroxide back into Iron Oxide, anything else should convert back to Fe2O3 as it dries, then heat it up in an oven just to be sure.
 

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