Factors that affect Reaction Rates

Today we finished the powerpoint that is on the previous blog post, we also looked at the "collision theory" powerpointand also the handout titled:  "Enthalpy - Exothermic and Endothermic Reactions"  The links to both of these are listed below:

http://db.tt/yOAQODAV

http://db.tt/obPNUyHO


Homework due for Monday:  Pgs 6-16 questions #10-17, 20-22, 24-8

You can expect to have a small quiz sometime late next week and the UNIT 1 EXAM  is tentatively scheduled for Tuesday, September 25th.

Have a great weekend!!

REACTION KINETICS INTRODUCTION

Students and Parents: Welcome to my Blog!! I hope to keep this up-to-date with class materials and information that is important to the course. 

The Blog for the Sememster 1 - 2012/13 school year will begin here with unit 1 - Reaction Kinetics. If you need help with the Chem11 Review or Lab Safety you may check back  to the February 2012 blog posts and all the information is there.


To access the introduction to Reaction Kinetics Powerpoint - follow the link below:
http://dl.dropbox.com/u/52353530/CHEM%2012/Chemistry%2012/Reaction%20Kinetics/INTRO%20REACTION%20KINETICS.ppt

Your homework assignments are on the powerpoint slides.

I am looking forward to a great semester with all of you.

Redox lab- text pages to help with the lab write-up

REDOX TITRATION LAB

the link below will take you to the lab worksheet.  Fill in your data from today's lab, save the document onto your computer and then upload or "send to" the document to your dropbox folder. 

Do not stress if this doesn't work out -- you will still have your hard copy from today's lab to hand in if the drop box thing doesn't work or you cant access the link. 


http://db.tt/7vj0inYk

FINAL EXAM REVIEW PACKAGE!

It is that time... time for review.  The Chemistry 12 final exam will be on Friday, June 22nd from 9am - 12pm in the school theatre.
The "mock replacement exam" will be on Monday, June 18th during regular scheduled class time.  You may use your mark on this exam to replace your lowest unit exam score. If you do not do well on the mock - it will not affect your grade in any way.

 The link below will take you to a review package that covers all the Prescribed Learning Outcomes (PLO's) for the course.  The answer key will be posted later.  You can also use the anglefire chem website and the ministry websites to access complete provincial exams for practice and the answer keys are provided for you as well on those sites -- they are on the right-hand sidebar of this blogg.

https://www.dropbox.com/s/dqr8k39f50na19y/Chemistry%2012%20%20Final%20Review.doc

Welcome to REDOX

I must apologize for not posting on the blog lately - life has been hectic!
On Tuesday, May29th we started our last unit - Electrochemisrty or REDOX for short. The photos below are of the notes, examples and homework we have covered in the past 2 classes.
For Friday work on the problems that were on the board - the answer key is there for you to make sure you are on the right track.

Titrations

On Monday we started Titrations -- most of this is a review as we have already covered titrations in Chem 11 and in Chem 12 solubility unit.  Read through the notes below for review.  There are several examples of titration problems.  They can be used to determine purity or molar mass of samples.  

The "Titration Analysis worksheet that will be due on Wednesday is below.  Watch for the diprotic acids and only taking the titration trials within 0.1 ml of each other!  The answers to these problems are in the photo of the board so you can see if you are on the right track.

In need of a Tutor?

If you are struggling with Chemistry, now is the time to get some extra help.  This information was passed on to me by Mr. Emerson.  Read below for Tutoring information:

My name is Darrol Colgur. I taught Chemistry 11 and 12 in BC for 35 years and have recently retired (2008). Since then I have helped many students with chemistry, both person-to-person and online—using email and live online sessions. The system I have developed and used for live online help works very well. I have a tablet PC and I use a screen-sharing application along with Skype. My extensive experience teaching chemistry and the way I relate to students, as well as my very reasonable rate ($20/h), I believe makes my service an excellent option for students seeking private help. My first hour session is a free trial with no obligations!

If you have a student that asks about getting help with Chemistry, I would sincerely appreciate you sending them my way. My e-mail address is the one I used for this email, my home phone is 250-494-9065, and my cell phone is 250-488-0949. Of course, because I’m online, I can help students anywhere. My times are also very flexible. My websites are the first ones that come up when “Googling” Chem 12 or Chem 11. There is more information on those.

Following are a few testimonials from students I have worked with or their parents:

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I also want to personally thank you for all your help. It truly did make chemistry 12 a lot more fun and easy. The one to one tutoring gave me experiences that really helped me on the tests and provincial, and chemistry in general.

I wish I'd had a chance to say a proper thank you in person to you for being such a fantastic teacher.  D…  had a terrific experience in your sessions and from what I could observe, I can see why. You have such enthusiasm and patience. With your help D…  actually enjoys learning Chemistry 12. Something he initially thought difficult if not impossible to learn. The tutoring was amazing.  I have to convince my son to try this method of tutoring as he was reluctant initially but with your help he actually likes it. 

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Kb calculations

Today there were many students away because of the playland field trip for Earth Science and Physics so we did not move too far ahead.  We did calculations involving kb -- see the board notes and example below.  Essentially, these calculations are the same as what we did on Monday with the ICE charts but because the predominant hydrolysis reaction is basic -- all the calculations must be about a base.  Instead of Ka - we use Kb (remember this must be caluclated), instead of pH we use pOH, instead of [H30+] we use [OH-].

Students were given class time to complete the following worksheet:

http://db.tt/iFjx28VM

The answers to the questions that were assigned are in the photo below.  Watch out for g, h and K -- these ones have amphiprotic species -- so before you can do an ice chart you must compare the ka and kb of both reactions and decide which reaction is the dominant one -- if it is ka that is greater -- then the ice chart and the calculations will all be for an acid.  If the kb is greater -- then everything will be calculated for a base!! 

 There will be a 4 question quiz on ka and kb on Monday!!!  

Monday's forgotten post

Sorry - I forgot to update yesterday.  Here is what we did monday -
we marked the hydrolysis worksheet that was assigned on Friday

Then we started notes on "calculations that involve Ka"

see pics below for the notes

Homework for wednesday is pg 151 #74-83

Today (Tuesday - -we will be doing the hydrolysis lab -- no write-up for this one -- but after you collect all your data there will be a quiz (counts as a lab mark not a quiz mark though)

pH, pOH and mixing strong acids and bases

Today we went over the homework from Monday, text and ka ws.

Then we took notes on pH and pOH calculations -- see below:

The link below will take you to a worksheet that was assigned on calculating pH pOH and using the kw as well. This sheet is due FRIDAY!!

http://db.tt/V0swzhSU

The second block we took notes on Mixtures of strong acids and bases -- see below

The worksheet below is also due friday -- please only do #1-4 (watch special instructions at top) and then do 6, 8, and 10 only. The answers to this worksheet are in the photo below to see if you are on the right track.

Calculating ka & kb

Ka is the ionization constant for acids and kb is for base. See notes below. Homework is pg 128 #31-33 & pg 130 #35 & 36

We also took notes on the relative strengths of acids and bases - see below.

The link below will take you to the worksheet refered to in the relative strengths of acids and bases notes.  You do not need to do pg 133 -- only the worksheet!!!

http://db.tt/rBsHl91l

ALSO!!!  QUIZ TOMORROW - NOT ON KA/KB STUFF - BUT THE STUFF FROM LAST WEEK.

Strong and weak acids and bases

Today we finished the PowerPoint on the last blog post and we discussed ka chart in our data booklets are organized- see notes below.

We also looked at the equilibrium of water constant and the self ionization of water- see pictures below

Acids and bases begin!!

During the first block today was the solubility unit exam.

Block 2 we started unit 4 - the acids and bases unit!

The link below will guide you to the introduction powerpoint for this unit
http://db.tt/4Tj4clnH


The next link is to a worksheet on the intro to acids and bases. We worked through #1 & 2 together - # 3 is due Friday.
http://db.tt/7PPrc6z1

Solubility test Wednesday !

Unit 3 solubility test on Wednesday!
Review old government exams for practice problems.
Same format as always 20 multiple choice and about 4 or 5 written

pollution precipitations

Today's notes on pollution precipitation

http://db.tt/icSjDRAL

IMPORTANT!! -- The solubility unit exam will be on WEDNESDAY, APRIL 18TH -- NOT TUESDAY.  There is a grad assembly on Tuesday afternoon during block 3 so I had to move the exam!!  I know this will make many of you happy.

Monday we will finish the unit -- please work on the solubility titration problems for Monday's class.

The solubility product and precipitates forming

Today we went over these solubility product notes and discussed whether precipitates will form or not.
Quiz on ksp on Wednesday !!

Solubility lab on wednesday!! Read through lab handout 12C below. Important note in the lab is to watch for ratios of ions!! Not all are 1:1!