Write the net ionic equation, including phases, that corresponds to the reaction

Question

Fe(NO3)2(aq)+K2S(aq)⟶FeS(s)+2KNO3(aq)

Answer 1

Because a precipitate is formed (FeS), we can write the net ionic using those elements:

Fe²⁺(aq) + S^2-(aq) ==> FeS(s) .. net ionic equation

To see this in more detail, write the ionic equation first, and then cancel the spectator ions:

Fe²⁺(aq) + 2NO₃^-(aq) + 2K⁺(aq) + S^2-(aq) ==> FeS(s) + 2K⁺(aq) + 2NO₃^-(aq) .. ionic equation

Fe²⁺(aq) + S^2-(aq) ==> FeS(s) .. net ionice equation