Come to class today prepared to start lab work on your demo and explain to me the chemistry behind your demo by the end of the period.

Review chapter 8 on chemical bonding concepts and complete the Active Learning Questions (1-7) on page 382.

 

Also continue to go over your AP chem study guide. AP test is a week away

For HW review chapters 5 (gases) and 10 (liquids/solids) and complete the Active Learning Questions chapter 5 (8-13) on page 217-218 and chapter 10 (4-11) on page 474-475

 

And, go over your AP Chem study guide.  Have you taken one of the practice tests yet?  What do you mean no?  OMG,what are you waiting for?  The exam is in one week!!!

Review chapter 12 on Kinetics and complete the Active Learning Questions (1-6) on page 566 of your text.

Review chapter 14 of your textbook and complete the Active Learning Questions (1-10) on acids and bases from page 672 of your textbook.

FRQ quiz electrochemistry today (4 points)

Tonight study for the FRQ quiz on electrochemistry

Review Chapter 15 on Aqueous Equilibria and complete the Active Learning Questions (1-12) on pages 739-740

 

Yesterday, you looked at Electrochemistry from a more conceptual view.  Tonight for HW do the same thing for THermodynamics.  Review Chapter 16 on Thermodynamics and complete the Active Learning Questions (1-6) on page 782 of your textbook.

Review Chapter 17 on Electrochemistry and complete the Active Learning Questions (1-11) on pages 829-830 of your textbook.

Finish FRQ practice from class and read and summarize sections 17.5-17.7 in your textbook including sample exercises 17.9 and 17.10

In lab today, you observed that copper ions were reduced on both lead and zinc metal (each of which was oxidized).  You also observed that lead ions were reduced on zinc metal which was oxidized.

                      Cu+2  +  2e-   forms  Cu (s)               0.34 V

                      Pb+2   +  2e-  forms  Pb (s)              -0.13 V

                      Zn+2   +  2e-  forms  Zn (s)               -0.76 V

                     

Read and summarize sections 17.1 through 17.4 in your textbook on Electrochemistry and electrochemical cells.  Copy sample exercises 17.1 through 17.8

 

Also, remember your practice FRQ thermo pages are due today too.

FRQ Quiz Thermodynamics: Hess' Law, Using Standards of Formation, Enthalpy, Entropy, Free Energy and Equilibrium

Study for your FRQ quiz (the FRQ practice pages and the lab challenge).  FRQ thermo practice I-IV due today

Work on the four practice FRQs from class today. Then go back and study the multiple choice and FRQs from thermo chapter of your AP study guide.  Learn them backwards and forwards.

Read and summarize sections 6.4 through 6.4 including sample exercises 6.7 through 6.11 and read and summarize section 8.8 including sample exercise 8.5

 

Try and finish calculating the delta H for the lab reaction

The AP Chemistry Spring Break Assignment has three parts to it:

As we look deeper into thermochemistry and thermodynamics, read and summarize sections 16.1 through 16.6 of your textbook

Complete the four FRQ questions from the attached file (one was duplicated by mistake)

As a followup to our lesson on solubility of salts, use your notes as needed to complete questions 76, 77, and 79 on page 743.  Note that the answers to 77 and 79 are given in the back of the text.  You have to show the work.

For HW read and summarize section 15.6 on solubility of salts an their equilibria in solution.  Also, copy each of the sample exercises: 15.12 through 15.15.  We will talk about solubility equilibria as well as pH indicators in solution over the next several days.

HW is to finish analyzing today's lab titration data based on what was written on the board.  Also, read and summarize section 15.5 on acid-base indicators including all formulas and calculations that appear throughout the reading and sample exercise 15.11

Hydrogen fluoride is a weak acid that dissociates based on the following equation:

 

             HF (aq)     +     H₂O (l)     reversible arrow     F^- (aq)     +     H₃O⁺ (aq)

 

The Ka for HF is 7.2 x 10^-4

Read and summarize section 15.4 on titration and titration curves.  Also copy the sample exercises 15.9 and 15.10 showing all the steps to solving the problem

Carefully review section 15.3 on buffers and complete questions 41-44 on page 741.  These questions ask you how to prepare a buffer of a specific pH (this is similar to our buffer lab last week).

FRQ quiz today. 

HW is to complete and turn in the class problem on the hydrogen phosphate buffer system from class on Friday.  That includes calculating the pH after the NaOH and the HCl were added.  Also answer this question:  How would things be different if you had increased the concentrations of the 2 parts of the buffer?  Try the entire problem with double the concentrations of each fot eh two parts of the buffer.

Tonights HW is based on our lesson about adding acid or base to a buffer system and observing how the buffer resists changes in pH.  Review your notes and the text section on buffers as needed to complete questions 35 and 36 (which are related to last night's buffer questions) and question 39 from page 741.

Review your notes and section 15.2 (including sample exercises 15.2, 15.4 and 15.5) to complete questions 33, 34, 37, 1nd 38 on page 741.

Read the two articles attached here on biochemical and biomedical applications of buffer systems.  Write a summary that addresses the topics discussed in the articles.

 

 

For HW read and summarize sections 15.1-15.3 form your textbook.  These sections take us to practical applications of acid base equilibrium chemistry

Read section 14.8 which relates to today's work in class and complete questions 99-101 and 105-106 on page 676.

Review section 14.6 from your text to complete questions 71-80 (do "a" and "b" only for each question) on pages 675-676.

Read section 14.5 from your text and go over today's notes to complete questions 55-58

As a follow-up to today's discussion, read and summarize sections 14.3 and 14.4 from our textbook and complete questions 41-46 on page 674

We're now moving from gas phase equlibria to equilibria in solutions.  We start with acids and bases and their affects on solutions.  For HW, read and summarize sections 14.1 through 14.2 and complete questions 28-36 evens on pages 673-674.

FRQ quiz gas equilibrium today

For HW go over your FRQ practice questions.  Come to class ready to ask questions for the concepts you need help with

Review your notes, text, and FRQ practice on equilibria to complete questions 46-50 on page 616-617.

Kinetics Assessment today

Review your equilibrium notes and practice and complete questions 37-39 and 43-45 on page 616 from your textbook

Review your notes from today on ICE boxes and sections 13.5 and 13.6 from your text to complete questions 33-35 and 40-42 pages 615-616. 

Tonight

Although we are moving Experiment 30 to Thursday, I am going to still ask that you complete the ASA and prelab tonight.  For pre lab remember you write an introduction with background on the topic, for materials and methods describe the steps of your procedure, and for results and data be sure to set up the data tables you will use. 

FRQ Quiz Kinetics

Early lab start 7:15 am (Experiment 38)

Prelab ready and ASA due

Here is the data for ASA expt 38 question 3

 

This homework pertains to the integrated rate late that we learned in the last part of the period Friday.  Review your notes and section 12.4 if you need to for the homework.  Look at questions 31, 33, 36, and 37 on pages 569-570.  All of them have data tables.  Instead of answering the questions as they are written, do the following:

Review your practice from today on determining rate laws from initial rate data and complete questions 25-30 on pg 567-568

Review your notes and section 12.1 from the text to complete questions 19-22 on page 567