Homework Help: chem grade 12

Posted by sam on Tuesday, January 31, 2012 at 9:49pm.

Consider the following substance:
Al2(SO4)3
What is the oxidation number of:
a) aluminum
b) sulfur
c)oxygen

chem grade 12 - DrBob222, Tuesday, January 31, 2012 at 11:30pm
Here is a good site to learn how to do these. Oxygen is -2 for each atom.
http://www.chemteam.info/Redox/Redox-Rules.html
chem grade 12 - IChO 2012 Washington DC, Thursday, February 2, 2012 at 3:09pm
<<<<<<<<<<>>>>>>>>>>>>
First : Al in III A

>>>> Al = 3+

Second : O must be 2-

Third : count and S = 6+

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