AP Chemistry

Standard(s):

8.1 Introduction to Acids and Bases

SAP-9.A: Calculate the values of pH and pOH, based on Ka and the concentration of all species present in a neutral solution of water.

8.2 pH and pOH of Strong Acids and Bases

SAP-9.B: Calculate pH and pOH based on concentrations of all species in a solution of a strong acid or a strong base.

8.3 Weak Acid and Base Equilibria

SAP-9.C: Explain the relationship among pH, pOH, and concentrations of all species in a solution of a monoprotic weak acid or weak base.

8.4 Acid-Base Reactions and Buffers

SAP-9.D: Explain the relationship among the concentrations of major species in a mixture of weak and strong acids and bases.

8.5 Acid-Base Titrations

SAP-9.E: Explain results from a titration of a mono- or polyprotic acid or base solution, in relation to the properties of the solution and its components.

8.6 Molecular Structure of Acids and Bases

SAP-9.F: Explain the relationship between the strength of an acid or base and the structure of the molecule or ion.

8.7 pH and pKa

SAP-10.A: Explain the relationship between the predominant form of a weak acid or base in solution at a given pH and the pKa of the conjugate acid or the pKb of the conjugate base.

8.8 Properties of Buffers

SAP-10.B: Explain the relationship between the ability of a buffer to stabilize pH and the reactions that occur when an acid or a base is added to a buffered solution.

8.9 Henderson-Hasselbalch Equation

SAP-10.C: Identify the pH of a buffer solution based on the identity and concentrations of the conjugate acid-base pair used to create the buffer.

8.10 Buffer Capacity

SAP-10.D: Explain the relationship between the buffer capacity of a solution and the relative concentrations of the conjugate acid and conjugate base components of the solution.

Learning Target:

I can understand Equilibrium relates to acids and bases.

I can understand how the equivalence point is shown in a titration reaction and what that means for the math. 

I can complete a virtual lab dedicated to the topic of titrations and how to do calculations associated with acid-base equilibrium.

Success Criteria:

I can learn about how a titration lab works through a Virtual Lab experience.

I can calculations associated with acid-base equilibrium with weak acids and/or weak bases, pH, and Ka and Kb.

Instructional Strategies:

Opening (I do):  Pirate Prep - Review Unit #4 problem and collect Unit #7 ECQs.

Work Session (explain clearly the We Do and You Do portions):

     We Do:  

1. Start Acid-Base notes and examples.
2. BozemanScience videos on "Acids, Bases, and pH" and "Acid-Base Equilibrium."

     You Do:

1. More acid-base and equilibrium practice questions. (See attached worksheet.)
2. Work on lab notebooks to turn in at the end of class.

Closing (We Check):

1. Start your work on Unit #8 Suggested Reading and ECQ schedule.

Differentiation Strategies:

Individual work on notes, lab notebooks, and practice problems at their own pace.

Formative/Summative

Assessment(s): (We Check)

Completing the lab safely is formative. 

Completing the book problems, lab write-up, and future unit test will be summative.

Assignment(s):

1. Start work on Unit #8 content...following Suggested Reading and ECQ schedule.
2. Work on Lab notebooks...those are due on Monday, December 7th. They are worth 160 points, which is the last of the BIG labs.  You will have one more Virtual lab this week, one hands-on lab next week with a worksheet, and one last Virtual lab the last week of this semester.