Why does the iron does not rust even if zinc coating is broken?
Answers
Answered by
3
because think is more reactive than iron so if the zinc coating is broken the area reacts with the zinc which protects iron from reacting with oxygen hence protecting it from rusting
Ananya1993:
Yeah but the exposed ones must rust isn't the parts which is exposed to air?
the part which is exposed is still surrounded by cracked wall of zinc
Then the zinc oxide is not covering it how can it be protected?
actually i'm not able to make u understand please consult ur teacher for ur queries :)
Okay then
But still u can try a bit
when air will come it react first with zinc layer even it is broken keeping the iron article safe
Okay thanks but I still can't understand
I will clear it from my mentors
ok
Answered by
2
Zinc is more reactive than iron, it loses electron more readily than iron. In galvanised iron object, zinc acts as anode and does not allow to the iron to lose electron, makes it a cathode. So long zinc is there on surface it reduces to Fe2+(if any formed) to iron back.
Hope its help.
Hope its help.
Please tell me.
I didn't understand the fe2+ formation
When u study the reaction of zinc u understand it.
I know abt reaction of zinc
Ok thanks
Anyways
Need to go
If u know the reaction why u does not understand.
Fine
Its my pleasure.
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