Question

observe the following pictures and write down the chemical ......plz answer this

Answer 1

The chemical process of this given picture:

first of all

Fe(s) become Fe2+ and 2e due to oxidation...
this ion travel to the point somewhere
oxygen in the air becomes H20 due to reduction... in presence of H2

then the Fe2+ transforms into Fe3+ from further oxidation...
And Fe3+ and H20 makes Fe203.xH20