Give the spectator ions for the reaction that occurs when aqueous solutions of k2s and fe(no3)2 are mixed

Here we have to detect the spectator ions in the reaction between K₂S and Fe(NO₃)₂ in aqueous medium.

The spectator ions in the reaction between K₂S and Fe(NO₃)₂ in aqueous medium are potassium ion (K⁺) and nitrate (NO₃⁻) ions.

The spectator ions are those which remains in same condition before and after any chemical reaction.

The aqueous solution of potassium sulphide (K₂S) remains as K₂S (aq) = 2K⁺ (aq) + S²⁻ (aq).

The aqueous solution of ferrous (II) nitrate [Fe(NO₃)₂] remains as Fe(NO₃)₂ (aq) = Fe²⁺ (aq) + 2NO₃⁻ (aq).

Now if we add the two solutions ferrous sulphide (FeS) and potassium nitrate (KNO₃) is produced. Among these FeS is completely insoluble in water whereas KNO₃ remains in its ionic form.

The reaction is- K₂S (aq) + Fe(NO₃)₂ (aq) = FeS (s) + 2KNO₃ (aq).

The potassium nitrate in water present as - K⁺ and NO₃⁻.

Thus we may conclude that potassium and nitrate ions are the spectator ions in this reaction.

The spectator ions in the reaction is determined.