double-displacement reaction
Explanation:
We have the following chemical reaction where iron sulfide (FeS) is reacting with hydrogen chloride (HCl) to produce hydrogen sulfide (H₂S) and iron (II) chloride (FeCl₂):
FeS (s) + HCl (aq) → H₂S (g) + FeCl₂ (aq)
In a double-displacement reaction the reactants change atoms between themselves to transform into products. Generally a double-displacement reaction can be expressed as following:
AB + CD → AC + BD
Learn more about:
types of chemical reactions
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