Solid iron(II) sulfide reacts with aqueous hydrochloric acid HCl to produce hydrogen sulfide gas H2S and aqueous iron(II) chloride .
The balanced chemical equation for the reaction is
Solid iron(II) sulfide reacts with aqueous hydrochloric acid to produce hydrogen sulfide gas and aqueous iron(II) chloride .
The equation can be written as follow:
Iron (II) sulfide => FeS
Hydrochloric acid => HCl
Hydrogen sulfide => H₂S
Iron (II) chloride => FeCl₂
FeS + HCl —> H₂S + FeCl₂
The above equation can be balance as follow:
FeS + HCl —> H₂S + FeCl₂
There are 2 atoms of H on the right side and 1 atom on the left side. It can be balance by writing 2 before HCl as shown below:
FeS(s) + 2HCl (aq) —> H₂S (g) + FeCl₂ (aq)
Thus, the equation is balanced.
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