Oxidation Definition and 211 Threads

I saw this arcticle on popular science's web site: http://www.popsci.com/popsci/how2/article/0,20967,693558,00.html it tells about a way using mercury paste to make aluminum rust, very fast and crumble to dust. as you can see in their picture, it apearently is true, and as they explain in...

Hello My question is regarding the oxidative function of selenium dioxide (when reacted with carbonyl compounds). Selenium Dioxide converts an active methylene group to a carbonyl group -C=O, so the reaction of butan-2-one with selenium dioxide should form two products (corresponding to...

I'm not sure how to balance this equation with regards to the half reaction and electrons, as well as the elements: Fe+2 + Cr2O-27--->Fe+3 + Cr+3 Right now, I've gotten this far, though I don't know if it's the right track: Fe+2 + 2Cr+72O-27--->Fe+3 + 4Cr+3 + 7O-22 What should I do next?

what is the difference between oxidation number and ionic charges? I realize they are written differently, +1 vs. 1+, but how can I reasonably explain the differnces to 17 year olds (and myself?)?

Oxidation: Is there any reason for Potassium to react with excess oxygen to give a superoxide, not simple or pero-? Gary

Hello, I was curious if anyone could explain to me the simple procedure/guidleines to carrying out oxidation (half-reactions), reduction (half-reactions) and overall net reactions. I've read my Chem book over and over, but I don't quite understand it. Even a pointer to a good site with a...

Redox question: 12.53 ml of .05093 M selenium oxide (SeO2) reacted exactly with 25.52 ml of .1 M CrSO4. Cr+3 is formed. To what oxidation state is Selenium converted? I think that the ml + M stuff gives you the ratio between moles of SeO2 and moles of CrSO4 (1m SeO2 = 4m CrSO4). But how am...

My problem is to describe the reason why a primary alcohol with PDC in Methylenechloride is oxidized to the aldehyde, but in DMF further to the Acid. Would the only reason be that DMF is hygroscopic and contents usally some water to give the aldehydehydrate?

Hi, Denis is my name. Study chemistry in Germany. Have to know the mechanism of the reoxidation to TPAP by NMO after TPAP has oxidized an alcohol. Could you help me? Thx, Denis

Oxidation States Help. URGENT! Hey, I've got this question to answer, any help would be greatly appreciated. In a compound, aluminum (Z=13) exists in only the +3 oxidation state but silicon (Z=14) can exist in either the +2 or the +4 oxidation state. Why?

I've done an experiment on preparing butanone by oxidation of butan-2-ol. Here are the simplified procedures. 1. Sodium dichromate-2-water were acidified by few cm^3 concentrated sulphuric acid, then the acidified dichromate and butan-2-ol were mixed. 2. Few pieces of anti-bumping granules...