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:
This page also has a list of steps on how to approach a redox half-reaction problem:
Here's a series of links with background notes, a worksheet, and answers:
This link has several examples but no answers. :-(
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:
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!
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Have a good end of the week!