Does anyone have any examples?
2006-11-02 16:18:09 · 4 answers · asked by lawlzlawlzduck 2 in Science & Mathematics ➔ Chemistry
Ptssh, I'm so dumb
Thanks for the oxygen!
2006-11-02 16:28:23 · update #1
WARNING: Answer is NOT OXYGEN.
It is true that when metals rust, it forms metal oxides. But by definition, Catalyst Speeds up the process of the Rxn but does not get used up. However as you can see in the equation below, Oxygen is consumed with metal to for metal oxide. Therefore Oxygen CAN'T be a catalyst. It is a reactant.
Fe + O2 ---> Fe2O3
The Correct answer is SALT. (Sodium in NaCl for an example)
Rust is the process of metal oxidizing into metal oxide. The oxidation needs a transfer medium to occur, such as water. Salt in the water speeds up the oxidation process by acting as a catalyst. The salt is never used up and the problem with salt is that even when water is gone, it remains and wait to restart the forming of rust once more moisture is present. This is why metals rust much easily in salty areas such as beaches and cold states where they use salt to melt the icy roads.
I hope you get my answer in time, if this question if for school. I know I'm against 3 answers here but let my past records of best answers speak for itself.
2006-11-02 21:45:51 · answer #1 · answered by †ђ!ηK †αηK² 6 · 0⤊ 0⤋
Oxygen causes rust. FeO in particular.
2006-11-03 00:21:42 · answer #2 · answered by nemahknatut88 2 · 0⤊ 0⤋
Yes, oxygen. I believe that it also requires interaction with water.
If you say "rust", it usually means the oxidation of iron. As opposed to oxidation of other metals.
2006-11-03 00:32:13 · answer #3 · answered by Doug M 2 · 0⤊ 0⤋
oxygen
2006-11-03 00:19:44 · answer #4 · answered by kate 2 · 0⤊ 0⤋