Complete the process of iron rusting by filling the blanks. Suggest a way to prohibit the process.
The rion rust is formed due to ______ reaction. Different regions on iron surface become anode and cathde.
Reaction on anode region :
` Fe_((s)) to Fe_((aq))^(2+) + 2e^(-)`
Reaction on cathode region.
` O_(2(g)) + 4H^(+)_((aq)) + ________ to 2H_(2)O_((l))`
When ` Fe^(2+)` ions migrate from anode region they react with _______ to form ` Fe^(3+)` ions.
A reddiush coloured hydrated oxide is formed from ______ ions. It is called rust.
` 2Fe^(3+)_((aq)) + 4H_(2)O((l)) to _______ + 6H^(+)_((aq))`
A way to prevent rusting ______

Explanation

The iron rust is formed due to `underline ("electrochemical") ` reaction.
different regions on iron surface become anode and cathode.
Rection on anode region :
` Fe_((s)) to Fe^(2+)_(aq) + 2e^(-)`
Reaction on cathode region :
` O_(2(g)) + 4H^(+)_((aq)) +4e^(-) to 2H_(2)O_(l)`
When ` Fe^(2+)` ions migrate from anode region they react with `underline ("water")` to form ` Fe^(3+)` ions.
A reddish coloured hydrated oxide is formed from ` Fe^(3+)` ions. It is called rust.
` 2Fe^(3+)_(aq) + 4H_(2)O_(l) to + Fe_(2)O_(3).H_(2)O_(s) + 6H^(+) (aq)`
A way to prevent rusting by colouring with acylic paints, Zn plating galvanizing , anodizing, alloying, etc.