Chapter 6 Chemical Reactions Section 6 Double Displacement

Chapter 6: Chemical Reactions Section 6: Double Displacement – Acid/Base Reactions

Learning Goals �Identify and write equations for acid– base reactions.

Acid-Base Reactions �Acid–base reactions are reactions that form water upon mixing of an acid and a base.

Acid-Base Reactions �No evidence of a chemical reaction is observable. The reactants and other products are soluble in water.

Acid-Base Reactions �Arrhenius acids: substances that produces H+ ions when dissolved in water.

Acid-Base Reactions �Arrhenius bases: substances that produces OH- ions when dissolved in water.

Acid-Base Reactions �Acid–base reactions (also called neutralization reactions) generally form water and an ionic compound, called a salt, that usually remains dissolved in the solution.

Acid-Base Reactions �HBr(aq) + Na. OH(aq) → H 2 O(l) + Na. Br(aq) Without spectator ions: H+(aq) + OH–(aq) → H 2 O(l)

Acid-Base Reactions �The net ionic equation for many acid– base reactions is as follows: H+(aq) + OH− (aq) → H 2 O(l)

Practice �Write chemical, complete ionic, and net ionic equations for each of the following reactions that produce water. Mixing sulfuric acid and aqueous potassium hydroxide produces water and aqueous potassium sulfate.

Practice �When benzoic acid (HC 7 H 5 O 2) and magnesium hydroxide are mixed, water and magnesium benzoate are produced.

Practice �Aqueous nitric acid reacts with aqueous potassium hydroxide.