Tie-Dye Change

Just a reminder. The tie-dye lab has been changed from Friday, May 14th to Monday, May 17th due to cold weather being forecast for Friday. If you did not order a t-shirt, make sure to bring something to dye if you want.

Solutions to 1999 Bohr Model problem and 2003 Beer's Law Problem

Below are the solutions to the problems given out on Thursday, May 6th, 2010 after the Electrochemistry quiz.

Solutions Rxn Rate Problems 2005 (B) #3, 2008 (B) #2, 2004 #3

Below are the solutions to the problems done on Friday, May7th, 2010 in class.

Class Material Covered on Friday, May 7th, 2010

The following questions were covered during class on Friday, May 7th. Most juniors were out due to the AP Euro test. Use the link below to go to the web site that hosts the old exams and download the tests specified by year and page number. All problems deal with reaction rate laws.

http://www.collegeboard.com/student/testing/ap/chemistry/samp.html

Year 2005 (Form B) - problem #3 - pages 8 and 9

Year 2008 (Form B) - problem #2 - page 7

Year 2004 - problems #3 - page 8

AP Chemistry T-Shirts

The cost of the AP Chemistry t-shirt will be $6.00. I will be placing the order for the t-shirts at the end of the day, Friday, May 7th, 2010. A form will be passed out in class on Wednesday, May 5th, 2010. Please fill out the form and attach $6.00 (cash only please) to the form with a rubber band or paper clip. If I do not have a form and money from you by Friday, May 5th, 2010, you will not be able to order a t-shirt. A copy of the form is below if you wish to print it off at home.

Also, I still have not received any submissions for an idea about the back of the t-shirt. Please get them into me as soon as possible.

Chapter 17 Take Home CMQ

If you were not in class on Tuesday, May 4th, 2010, an image of the Chapter 17 Take Home Check-Me-Quiz is below. Print it and finish it for tomorrow, Wednesday, May 5th, 2010.

AP Chemistry Problems 2002 #2 and 2005 (Form B) #2

Below are the solutions for year 2002 #2 and 2005 (Form B) #2.

Correction to year 2000 #2 b iii)

In the solution to the AP Chemistry test for year 2000, question 2 b iii) the potential was listed as (-0.68 V). This is for the oxidation. The questions asks for the reduction potential, therefore a value of (+0.68 V) should have been reported. The solution to the problem was posted on Monday, 5/3. Sorry about the mix up.

AP Chemistry Test Review Session Reminders

There will be one more multiple choice practice exam given. It is the 1999 muliple choice test and it can be taken at one of the following times:

• Thursday, May 6th - 7:00 to 9:00 pm
• Friday, May 7th - 2:30 pm to 4:30 pm
• Saturday, May 8th - 8:30 am to 10:30 am

Also, in addition to the regular Friday morning review session, there will be another offered (only attend one) from 2:30 - 3:15 pm on Wednesday, May 5th. This is for those that have an AP test on Friday or those that just want to come after school instead of before school.

AP Chemistry Problems 2004 (Form B) #6 and 2000 #2

Below are the solutions to the AP Chemistry problems covered in class today, Monday, May 3rd. At the beginning of the hour tomorrow, we will be discussing the solution to the year 2000 #2 problem. We will finish the remaining two problems in class tomorrow and you will be given the take home Check-Me-Quiz, which will be due on Wednesday.

Thermodynamics Questions

Below is a solution to the last problem on the question packet for Chapter 16. This was not completed in class on Friday, April 23rd. Included below are the links to the scoring guidelines for some of the questions if you would like to view them. The link is for the entire test, so you will have to sort through the questions to find the solution to the particular problem.

1999 #6 - Not available

2003 #7 - Not available

2004#2

http://www.collegeboard.com/prod_downloads/ap/students/chemistry/ap04_sg_chem.pdf

2001 #1 - Not available

2004 (Form B) #7

http://www.collegeboard.com/prod_downloads/ap/students/chemistry/ap04_sg_b_chem.pdf

2009 #5

http://apcentral.collegeboard.com/apc/public/repository/ap09_chemistry_sgs.pdf

The chapter 16 quiz will be another past AP problem. The quiz will be quantative, so you will be using a calculator and you will have your equations available to you.

AP Written Questions 1999, 2003, and 2004

Below are the solutions to the first three problems from the packet given for Chapter 16. Questions 1999 and 2003 are conceptual. They were given on the portion of the written exam that does not allow calculators or equations. Question 2004 allows the use of a calculator and the equations sheet.

Gibb's Free Energy CMQ

Below is the Check-Me_Quiz given on Thursday, 4/22/2010. You will get this quiz back on Friday, 4/23. There will be questions using some of the concepts from this quiz on the Chapter 16 quiz, which will be given Monday, 4/26.

Practice Multiple Choice Test Tonight

The practice multiple choice test is still on tonight, Thursday, 4/22/2010 at 7:00 pm. Please look at this site if the weather gets worse closer to 7:00 pm this evening.

AP Chemistry Class T-Shirt

Please submit your ideas for what to put on the AP Chemistry class T-shirt for the 2009-2010 school year. This will be put on the back of the T-shirt. Please keep it clean and try to incorporate something from the class in the slogan.

Information will be coming later on cost. The shirts will be white, cotton so they can be tie-dyed. We will tie-dye the Friday after the AP Chemistry test

Review Material for AP Chemistry Test

Below is a link to a website that supplies study cards that work well for the AP Chemistry test.
http://www.chemmybear.com/stdycrds.html

THIS FRIDAY IS ONE OF THE MOST IMPORTANT EARLY MORNING STUDY SESSIONS! Chemical reactions will be reviewed. This is another guarantee on the AP Chemistry test. You will be asked to write out three chemical reactions from information given and explain concepts related to the reactions.

Times for the first multiple choice practice exam:
Thursday, 4/22 - 7:00 pm to 9:00 pm
Friday, 4/23 - 2:30 pm to 4:30 pm
Saturday, 4/24 - 8:30 am to 10:30 am

You will have 90 minutes to take the exam and then the last 30 minutes will be used to correct the exam. You will be able to check out a copy of the exam and a solutions guide. You must return this exam after the AP Chemistry test.

Chapter 15 Take-Home-Test

The homework solutions have been removed from the blog. Hopefully you have been keeping up with the homework and have your own work from the problems assigned. Good luck on the exam. It is due first thing on Monday during class.

Homework, pages 777-778 problems 75, 78, 80, 82, 87, 80

The k sp lab will be performed on Wednesday, 4/14

Buffer Practice Page 775 probs #45 and #46

It is a must that you know how to construct a buffer. Below are solutions to questions 45 and 46 from the end of Chapter 15.

Homework, pages 776 problems 55, 72

Homework - Titration Curves / Unknown Molarity

Using the data supplied to you in class, please make sure that you answer the four scenarios presented on the worksheet given out today in class, Thursday, April 8th. The worksheet will be collected at the beginning of class. Be prepared for a Check-Me-Quiz on how to build a buffer. Also, there is a AP Chemistry test review session tomorrow morning (Friday, 4/9).

Homework, pages 775 problems 34, 36, 38, 41, 42, 43

Homework, pages 774-775 problems 14, 21, 23, 25, 27

Below are the solutions for the homework set assigned on Monday, April 5th. Since many of you will be gone on Tuesday, April 6th, the following assignment will be given. Page 775, problems 34, 36, 38, 41, 42, 43. The solutions to the problems will be posted the afternoon of Tuesday, April 6th.

Homework, pages 707-708 problems 113, 114, 117, 118

#113 is on the previous blog entry. Remember, 13 mutiple-choice quiz tomorrow on the last half of Chapter 14. Please review all homework assigned since Monday, March 29th.

Homework, page 707 problems 99, 100, 102, 103, 105, 112

OnThursday, April 1st, 2010, the second quiz for Chapter 14 will be given. It will be 13 multiple choice questions dealing with the second half (sections 14.7 and on) of Chapter 14. Review all of the homework given since Monday, March 29th.

Homework, pages 706-707 problems 75, 81, 83, 85, 91, 93, 97, 98

Homework, pages 705-706 problems 49, 51, 52, 56, 57, 60, 62, 65, 76

Below are the solutions to the problems assigned on Wednesday, March 17th. I did not follow my own advice for problem #49 and keep everything in milliliters and millimoles. The ratios are the same either way you work it to get the correct molarities.

Homework, pages 704-705 problems 35, 37, 40, 41, 42, 44, 45

Below are the solutions to the homework assigned on Tuesday, March 16th. Problems 40, 41, 42, and 44 were all or partially completed in class. When finding a pH from hydrogen ion concentration or pOH from hydroxide ion concentration, the number of significant figures in the concentration is how many decimal places can be allowed in the pH or pOH value.

Homework, pages 703-704 problems 16, 17, 30, 31

Please read sections 14.1 through 14.5 in addition to the questions and problems assigned.

NO CLASS THE REST OF CSAP WEEK!!

Remember, AP Chemistry will not be meeting after Wednesday, March 10th, 2010 until the following week. We will not meet during the designated time for AP Chemistry the morning of Thursday, March 11th. Also, there will be no early meeting for the AP Chemistry test review this week. The reviews will resume on Friday, March 19th. See you next week.

Equilibrium Constant Pre-Lab Key

Below is the key for the Keq lab which will also act as the review for the Chapter 13 test. You will be taking the exam in the afternoon session during CSAP week. The test is written. Monday (3/8) will be review for the exam.

Homework, pages 647-649 problems 45, 46, 47, 49, 50, 52, 53, 54