Objectives:
1. Compute the oxidation number of an atom of any element in a pure substance.
2. Apply the half-reaction method to balance redox equations.
I posted information about assigning oxidation numbers in my previous post -- here's a simple list of basics to memorize for your reference:
Worksheets with practice assigning oxidation numbers are in my 5/4/14 post as well.
It is important to balance the charges exchanged when balancing redox reactions -- one approach is to examine the oxidation and reduction separately, called the half-reaction method.
Here is a simple introductory example:
http://homepage.smc.edu/merlic_jennifer/Chem11/Handouts/Half_Reaction_Method.pdf
This page also has a list of steps on how to approach a redox half-reaction problem:
http://faculty.scottsdalecc.edu/borick/files/2011/05/Balancing-Redox-Reactions1.pdf
Here's a series of links with background notes, a worksheet, and answers:
http://chemistryfouryou.weebly.com/uploads/8/9/2/7/8927138/9.2_balancing_redox.pdf
http://library.vcc.ca/learningcentre/pdf/vcclc/Chem0993-BalancingRedoxReactions2.pdf
This link has several examples but no answers. :-(
http://www.fieldlocalschools.org/userfiles/1138/Classes/7788/Redox%20Reactions%20Worksheets.pdf
Because I'm focusing on Introductory Chemistry, I only presenting the half-reaction method for balancing redox reactions.
Check out my lab book "Chemistry on a Budget" at amazon.com:
http://www.amazon.com/Chemistry-Budget-Marjorie-R-Heesemann/dp/0578129159/ref=sr_1_1?s=books&ie=UTF8&qid=1389410170&sr=1-1&keywords=chemistry+on+a+budget
Each lab is presented with two possible report formats -- both labs use the same procedure page but each has a different conclusion page -- one with 10 questions to be answered as a conclusion, the other with a full laboratory report required. This gives the teacher the option of what type of report is desired!
*I'd love to hear from you! Your feedback would really help me to focus on your needs! There should be a "Contact" form below, or click on the "Contact" tab on the top right of this page.
Have a good end of the week!