When heated, iron and sulfur combine to form a new compound, iron (III) sulfide. Write and balance the chemical equation. Determine what is oxidized and what is reduced (include charges).

Question

Balanced chemical equation:_________________

____ is oxidized to _____

____ is reduced to _____

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Answer 1

2Fe(s) + 3S(s) ==> Fe₂S₃

solid (Fe) is oxidized to Fe³⁺ (iron III). It goes from oxidation no. zero to oxidation no. 3⁺.

Sulfur solid (S) is reduced to sulfide ion (S^2-). It goes from oxidation no. zero to oxidation no. 2^-.