how do tell what is the reduction reaction and what is the oxidation reaction

Question

nechirwan · Answer

by  simple  rule "Leo" the lion say "Ger"
lose electron oxidation
gain electron reduction

anonymous · Answer

:) thank you

nechirwan · Answer

welcome

anonymous · Answer

I like "Oil Rig" or "oxidation is loss of electrons" whilst "reduction is gain of electrons". An example of oxidation is iron rusting it goes from Fe to Fe3+ whilst oxygen in the air becomes O2-. The oxygen is an oxidizing agent but itself is reduced. Other oxidizing agents include hydrogen peroxide, which can accept electrons from Fe2+ ions for example to make Fe3+. There's more details here: http://en.wikipedia.org/wiki/Oxidation#Oxidizers