Drill: What happens to Hydrogen ions when they dissociate from acids? What happens to Hydrogen ions when they dissociate from acids? Get your calculator! Get your calculator!

Objective: The student will be able to: The student will be able to: Explore the reaction of acids and bases in order to make conclusions about neutralization reactions. Explore the reaction of acids and bases in order to make conclusions about neutralization reactions.

SAT Enrichment The products of a neutralization reaction are always….. The products of a neutralization reaction are always….. a. An acid and a base. b. A salt and water. c. Chemically inert. d. Hard to predict. e. Neutral.

Quick Quiz Clear your desk of everything. Clear your desk of everything. This quiz will only be 5 min. This quiz will only be 5 min.

Neutralization Reactions What happens when an acid is mixed with a base??

Neutralization Reaction Lab Purpose Purpose To determine the amount of NaOH (base) needed to titrate 0.50 M HCl (acid). To determine the amount of NaOH (base) needed to titrate 0.50 M HCl (acid). Are there any questions from last night’s homework? Are there any questions from last night’s homework?

Neutralization Reaction Lab Acid solution with indicator Added base is measured with a buret. Color change shows neutralization. Base Buret

Neutralization Reaction Lab You will only have 30 min to complete the lab portion. You will only have 30 min to complete the lab portion. Analysis questions (10 min) Analysis questions (10 min)

Neutralization Reactions Excess hydrochloric acid in the stomach can cause heartburn and a feeling of nausea. Antacids neutralize the stomach acid and relieve the pain of acid indigestion. You will learn what a neutralization reaction is. Excess hydrochloric acid in the stomach can cause heartburn and a feeling of nausea. Antacids neutralize the stomach acid and relieve the pain of acid indigestion. You will learn what a neutralization reaction is.

Acid-Base Reactions In general, In general, the reaction of an acid with a base produces water and one of a class of compounds called salts.

Acid-Base Reactions are generally called neutralization reactions. Reactions in which an acid and a base react in an aqueous solution to produce a salt and water are generally called neutralization reactions.

Titration The process of adding a known amount of solution of known concentration to determine the concentration of another solution is called titration. The process of adding a known amount of solution of known concentration to determine the concentration of another solution is called titration.

Titration When, the is when When an acid and base are mixed, the equivalence point is when the number of moles of hydrogen ions equals the number of moles of hydroxide ions.

Titration The is called the. The solution of known concentration is called the standard solution. Indicators are often used to determine when enough of the standard solution has been added to neutralize the acid or base. Indicators are often used to determine when enough of the standard solution has been added to neutralize the acid or base. The is the of the titration. The point at which the indicator changes color is the end point of the titration. Simulate the titration of several acids and bases and observe patterns in the pH at equivalence. The point of neutralization is the end point of the titration.

Titration

Sample Problem

Try This! 1 mole H 3 PO 4 = 3 moles NaOH Answer = M

Summary 1. Did we accomplish the objective? 2. What is produced from the reaction of acids and bases? 3. How do acids and bases react with one another? 4. What type of reaction is the reaction of an acid with a base that produces water and salt? 5. What is the point when an acid and base are mixed and the number of hydrogen ions equals the number of moles of hydroxide ions?

Exit Ticket Complete you exit ticket and place it in the bin when you are finished. Complete you exit ticket and place it in the bin when you are finished.

Homework Read the Titration Lab and be ready for the pre-lab quiz next class. Read the Titration Lab and be ready for the pre-lab quiz next class.