The scheme of transformations is given: Fe-FeS-H2S -Na2S a) write down the molecular equations

| May 22, 2021 | education

The scheme of transformations is given: Fe-FeS-H2S -Na2S a) write down the molecular equations of the reactions of transitions b) make up the equation of reaction 3 in molecular, complete and abbreviated ion-molecular form.

1) Iron sulfide can be obtained by the interaction of two simple compounds, while a ferrous salt is formed, since sulfur is a weak oxidizing agent
Fe + S = FeS
2) Ferric chloride can be obtained from sulfide by displacing the acid residue of hydrogen sulfide acid with a strong acid, for example, hydrochloric
FeS + 2HCl = FeCl2 + H2S
3) By the neutralization reaction between alkali and hydrogen sulfide, we obtain sodium sulfide:
2NaOH + H2S = Na2S + 2H2O
2Na (+) + 2OH (-) + H2S = 2Na (+) + S (2-) + 2H2O
H2S + 2OH (-) = S (2-) + 2H2O



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