Write the reaction equation: S – H2S – Na2S – FeS – H2S
| April 2, 2021 | education
The condition, why the reaction takes place, is indicated in brackets.
S + H2 = H2S (gas formation) – compound reaction.
H2S + NaOH = Na2S + H2O (appearance of a weak electrolyte) – exchange reaction.
Na2S + FeCl2 = 2NaCl + FeS (precipitation) – exchange reaction.
FeS + 2HBr = FeBr2 + H2S (gas evolution) – exchange reaction.
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