When each of the following pairs of aqueous solutions is...

When each of the following pairs of aqueous solutions is mixed, does a precipitation reaction occur? If so, write balanced molecular, total ionic, and net ionic equations:
(a) Sodium nitrate $+$ copper (II) sulfate
(b) Ammonium bromide + silver nitrate

Key Concepts

Spectator Ions

Spectator ions are ions that remain unchanged and in solution during a chemical reaction. They do not participate in the formation of the precipitate and are omitted in the net ionic equation to simplify the representation of the actual chemical change.

Net Ionic Equation

The net ionic equation is derived from the total ionic equation by removing the spectator ions that do not participate in the reaction. It focuses only on the species that undergo a chemical change, clearly indicating the formation of the precipitate.

Total Ionic Equation

The total ionic equation breaks down all the soluble ionic compounds in the reaction into their constituent ions. This equation shows all the ions present in the solution and how they recombine to form products, highlighting which species are actively involved in the reaction.

Solubility Rules

Solubility rules are guidelines used to predict the solubility of ionic compounds in water. They help determine which combinations of ions remain in solution and which will form a precipitate. These rules are essential when determining if a reaction will produce an insoluble product.

Precipitation Reaction

A precipitation reaction is a type of chemical reaction in which two aqueous solutions react to form an insoluble solid, known as a precipitate. This process occurs when the product of the reaction is poorly soluble in water, and its formation drives the reaction to completion.

Balanced Molecular Equation

The balanced molecular equation represents a chemical reaction with complete formulas for all reactants and products, ensuring that the number of atoms and the overall charge are balanced on both sides of the equation. It provides an overall picture of the reaction in its entirety.

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