Complete intra molecular redox reaction of Fe2S3 and SO3 with oxidation and reduction atoms and how much charge move towards Fe2SO3?

To understand the intramolecular redox reaction between iron(III) sulfide (Fe2S3) and sulfur trioxide (SO3), we need to break down the components involved and analyze how oxidation and reduction occur within this reaction. This will also help us determine the charge movement towards the product, iron(III) sulfate (Fe2(SO4)3).

Identifying the Reactants

In this reaction, we have:

• Fe2S3: This compound contains iron in the +3 oxidation state and sulfur in the -2 oxidation state.
• SO3: Sulfur trioxide features sulfur in the +6 oxidation state and oxygen in the -2 oxidation state.

Oxidation and Reduction Processes

In a redox reaction, one species is oxidized (loses electrons) while another is reduced (gains electrons). Let's analyze the oxidation states:

• In Fe2S3, iron (Fe) is at +3 and sulfur (S) is at -2.
• In SO3, sulfur (S) is at +6.

When Fe2S3 reacts with SO3, the sulfur in Fe2S3 is oxidized to a higher oxidation state, while the sulfur in SO3 is reduced. The reaction can be summarized as follows:

Oxidation Half-Reaction

The sulfur in Fe2S3 goes from -2 to +6:

• 2 S (from Fe2S3) → 2 S (in SO4) + 12 e^-

Reduction Half-Reaction

The sulfur in SO3 is reduced from +6 to +4 (as it forms sulfate):

• SO3 + 2 e^- → SO4

Overall Reaction

Combining these half-reactions, we can derive the overall balanced equation:

• Fe2S3 + 6 SO3 → 2 Fe2(SO4)3 + 3 S

Charge Movement Analysis

In terms of charge movement, we can analyze how many electrons are transferred in this reaction:

• Each sulfur atom in Fe2S3 contributes to the oxidation process, releasing a total of 12 electrons.
• The reduction of SO3 to sulfate consumes 6 electrons for every 1 molecule of SO3.

Since we have 6 SO3 molecules reacting, the total charge movement towards the product Fe2(SO4)3 is 12 electrons. This indicates that the reaction is balanced in terms of charge, as the oxidation and reduction processes are equal.

Conclusion

In summary, the intramolecular redox reaction between Fe2S3 and SO3 involves the oxidation of sulfur from -2 to +6 and the reduction of sulfur from +6 to +4. The total charge movement towards the formation of iron(III) sulfate (Fe2(SO4)3) is 12 electrons, ensuring that the reaction is balanced in terms of both mass and charge.