Why has a nail that has been put in tap water which has been boiled to remove dissolved gasses not rusted
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A nail that has been put in the boiled tap water dont get rust because the oxygen in the water gets dissolved on boiling.
Explanation:
- Rusting process, provided normal temperatures, requires liquid water and oxygen.
- On boiling the water, the gases present in the liquid is dissolved and released, including oxygen. Hence rust does not form.
- When the water is exposed to the atmosphere after cooling, oxygen in the air will dissolve in liquid again leading to rust formation in nail.
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