Unit 4 AP Chemistry

Front

What is a precipitation reaction?

Back

A precipitation reaction is a chemical reaction in which two aqueous solutions react to form an insoluble solid, known as a precipitate.

Front

What is the net ionic equation for the precipitation reaction between sodium carbonate and magnesium sulfate?

Back

CO₃²⁻ + Mg²⁺ → MgCO₃

Front

What is the net ionic equation for the precipitation reaction between sodium phosphate and lead (II) acetate?

Back

2PO₄³⁻ + 3Pb²⁺ → Pb₃(PO₄)₂

Front

What does it mean if K < 0 in an acid-base reaction?

Back

If K < 0, it indicates that the equilibrium favors the reactants, meaning the base A⁻ is stronger than base B⁻.

Front

What are the products of a combustion reaction?

Back

In a combustion reaction, oxygen must be a reactant, and the products are typically carbon dioxide and water.

Front

Define a net ionic equation.

Back

A net ionic equation shows only the species that participate in a chemical reaction, omitting spectator ions.

Front

What is the role of spectator ions in a reaction?

Back

Spectator ions are ions that do not participate in the actual chemical reaction and remain unchanged in solution.

Front

What is the difference between a complete ionic equation and a net ionic equation?

Back

A complete ionic equation includes all ions present in the reaction, while a net ionic equation only includes the ions that undergo a change.

Front

What is the significance of solubility rules in predicting precipitation reactions?

Back

Solubility rules help determine which ionic compounds will dissolve in water and which will form precipitates.

Front

What is an acid-base reaction?

Back

An acid-base reaction involves the transfer of protons (H⁺ ions) between an acid and a base.