Respuesta :
Answer:
2 Na⁺(aq) + S²⁻(aq) + Fe²⁺(aq) + 2 NO₃⁻(aq) ⇒ FeS(s) + 2 Na⁺(aq) + 2 NO₃⁻(aq)
Explanation:
Let's consider the molecular equation that occurs when aqueous solutions of sodium sulfide and iron(II) nitrate are mixed.
Na₂S(aq) + Fe(NO₃)₂ ⇒ FeS(s) + 2 NaNO₃(aq)
The complete ionic equation includes all the ions and the species that do not dissociate in water.
2 Na⁺(aq) + S²⁻(aq) + Fe²⁺(aq) + 2 NO₃⁻(aq) ⇒ FeS(s) + 2 Na⁺(aq) + 2 NO₃⁻(aq)
The complete ionic equation for the reaction between aqueous solution of sodium sulfide and iron(II) nitrate is
2Na⁺(aq) + S²⁻(aq) + Fe²⁺(aq) + 2NO₃⁻(aq) —> FeS(s) + 2Na⁺(aq) + 2NO₃⁻(aq)
The complete ionic equation for the reaction between aqueous solution of sodium sulfide and iron(II) nitrate can be written as follow:
In solution, Na₂S and Fe(NO₃)₂ will dissociate as follow:
Na₂S(aq) —> 2Na⁺(aq) + S²¯(aq)
Fe(NO₃)₂(aq) —> Fe²⁺(aq) + 2NO₃¯(aq)
The reaction will proceeds as illustrated below to give the complete ionic equation:
Na₂S(aq) + Fe(NO₃)₂(aq)—>
2Na⁺(aq) + S²¯(aq) + Fe²⁺(aq) + 2NO₃¯(aq) —> FeS(s) + 2Na⁺(aq) + 2NO₃¯(aq)
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