Question

Give two methods for rusting of iron

Answer 1

corrosion

reaction with O2 gas

redox reaction

Answer 2

Iron gets corroded when placed in moisture containing air without any protection like galvanisation , tinning , paint coating or grease coating .

Iron + Water + Oxygen = Rust

i.e. 4 Fe(s) + 6 H2O(l) + 3 O2(g) → 4 Fe(OH)3(s)

Then Fe(OH)3 dehydrates to produce Fe2O3.nH2O(s).

Thereby, the chemical formula for rust isFe2O3.nH2O.


hope this helps you and please mark as brainliest