Final answer:
To predict whether a precipitation reaction will happen between Nickel(II) acetate and Iron(II) bromide, one should consult solubility rules. Examples include the reactions of potassium sulfate with barium nitrate and lithium chloride with silver acetate, both resulting in precipitation and associated net ionic equations.
Step-by-step explanation:
To predict the result of mixing solutions of ionic compounds such as Nickel(II) acetate and Iron(II) bromide, and to determine if a precipitation reaction occurs, one should refer to solubility rules. If an insoluble compound can form from the cation and anion pairings, a precipitate is expected. In the provided examples, soluble compounds form insoluble products, leading to a net ionic equation that represents the formation of the precipitate.
For instance, when predicting the reaction between potassium sulfate and barium nitrate, we derive potential products BaSO4 (insoluble) and KNO3 (soluble), yielding a precipitation reaction and a net ionic equation for the formation of solid barium sulfate. Similarly, when lithium chloride reacts with silver acetate, the insoluble product AgCl leads to a precipitation reaction. As another example, combining lead nitrate with ammonium carbonate results in the insoluble product PbCO3, indicated by solubility rules.