Acids and Bases! Created by Educational Technology Network. www.edtechnetwork.com 2009

Acids Bases Theories pH Titrations 10 10 10 10 10 20 20 20 20 20 30 30 30 30 30 40 40 40 40 40 50 50 50 50 50

Topic 1 – 10 Points Acids give food a _______ taste? QUESTION: ANSWER: Sour

Topic 1 – 20 Points Hydrogen gas QUESTION: ANSWER: Acids react with metals to produce ______ _______? ANSWER: Hydrogen gas

Topic 1 – 30 Points Acids turn litmus paper what color? QUESTION: ANSWER: Red

Topic 1 – 40 Points What is the range of acidic pH? QUESTION: ANSWER: 0-6

Topic 1 – 50 Points Name these two acids: HBr H2SO4 QUESTION: ANSWER: Hydrobromic acid Sulfuic acid

Topic 2 – 10 Points QUESTION: ANSWER: Blue Bases turn litmus paper what color? ANSWER: Blue

Topic 2 – 20 Points Bases often release what ion in solution? QUESTION: Bases often release what ion in solution? ANSWER: Hydroxide (OH-)

Topic 2 – 30 Points QUESTION: What is the basic pH range? ANSWER: 8-14

Daily Double Topic 2 – 40 Points QUESTION: In general, bases will react with an acid to produce ________ and ________? ANSWER: Salt and water Daily Double

Topic 2 – 50 Points Name three common household bases? QUESTION: ANSWER: Ammonia, bleach, dish soap, laundry detergent, baking soda, antacids

Topic 3 – 10 Points Name the three Acid/Base theories? QUESTION: ANSWER: Arrhenius, Bronsted/Lowry, Lewis

Topic 3 – 20 Points Which theory has the broadest definition? QUESTION: Which theory has the broadest definition? ANSWER: Lewis

Topic 3 – 30 Points QUESTION: ANSWER: How would you define a Bronsted/Lowry base? ANSWER: Hydrogen acceptor

Topic 3 – 40 Points How do you define a Lewis acid? QUESTION: ANSWER: An electron pair acceptor

Topic 3 – 50 Points QUESTION: ANSWER: Define amphoteric. A compound that can be both a B/L acid and a B/L base.

Topic 4 – 10 Points QUESTION: What is the pH of pure water? ANSWER: 7

Topic 4 – 20 Points QUESTION: What is the pH of a solution with a hydronium concentration of 1.0 x 10-5M? ANSWER: pH 5

Topic 4 – 30 Points QUESTION: What is the pH of a solution with a hydroxide concentration of 1.0 x 10-2 M? ANSWER: pH 12

Topic 4 – 40 Points pOH 6 QUESTION: ANSWER: What is the pOH of a solution with a hydroxide concentration of 0.000001 M? ANSWER: pOH 6

Topic 4 – 50 Points What is the equation for finding pH? QUESTION: ANSWER: pH = -log(H+)

Topic 5 – 10 Points This is an example of a ___________ reaction. QUESTION: NaOH + HCl  NaCl + H2O This is an example of a ___________ reaction. ANSWER: Neutralization

Topic 5 – 20 Points QUESTION: ANSWER: A _________ is a chemical that changes color to distinguish an acid from a base? ANSWER: Indicator

Topic 5 – 30 Points Why are titrations useful? QUESTION: Why are titrations useful? ANSWER: Help identify unknown concentration of acid or base

Topic 5 – 40 Points QUESTION: Phenolphthalein turns _______ in acids and _______ in bases. ANSWER: clear, pink

Topic 5 – 50 Points QUESTION: If 32.0mL of a solution of NaOH required 16.0mL of 0.100 M HCl for neutralization to the end point, calculate the molarity of the NaOH? ANSWER: 0.05 M

Final Jeopardy Question: Answer: 0.31 M You are given titration data:   Initial Reading Final Reading Molarity HCl 12.62 mL 41.43 mL 0.5 M Ca(OH)2 24.75 mL 48.04 mL ? M