What types of reactions is involved in rusting
Answers
Answer:
Although rust is considered the result of an oxidation reaction, it's worth noting not all iron oxides are rust. Rust forms when oxygen reacts with iron but simply putting iron and oxygen together isn't sufficient. Although about 20 percent of air consists of oxygen, rusting doesn't occur in dry air. It occurs in moist air and in water. Rust requires three chemicals to form: iron, oxygen, and water.
iron + water + oxygen → hydrated iron(III) oxide
This is an example of an electrochemical reaction and corrosion. Two distinct electrochemical reactions occur:There is anodic dissolution or oxidation of iron going into aqueous (water) solution:
2Fe → 2Fe2+ + 4e-
Cathodic reduction of oxygen that is dissolved into water also occurs:
O2 + 2H2O + 4e- → 4OH-
The iron ion and the hydroxide ion react to form iron hydroxide:
2Fe2+ + 4OH- → 2Fe(OH)2
The iron oxide reacts with oxygen to yield red rust, Fe2O3.H2O
Explanation:
Answer:
The formation of rust requires iron, water and oxygen. Although it's a complex process, the chemical equation is simply 4Fe + 3O2 + 6H2O → 4Fe(OH)3. The electrons produced by this reaction combine with hydrogen ions in the water as well as with dissolved oxygen to produce water: 4e- + 4H...
When iron is exposed to wooden or air over a pained of time, the iron reach with oxygen in the presence of moisture to form a reddish-brown chemical compound, iron acid . This is refereed to