Question about rusting on iron nails.

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    Iron Rusting
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Discussion Overview

The discussion centers around the phenomenon of rusting on iron nails, exploring the conditions that facilitate or inhibit the rusting process, as well as experimental approaches to investigate these factors. Participants share insights on the chemistry involved, propose experimental setups, and seek clarification on concepts related to rusting.

Discussion Character

  • Homework-related
  • Exploratory
  • Technical explanation

Main Points Raised

  • One participant requests information on how and why rusting occurs, including the necessary conditions for the process.
  • Another participant provides a chemical equation related to rust formation.
  • A participant expresses a need for simpler explanations suitable for a high school understanding.
  • Several conditions necessary for rusting are identified, including the presence of oxygen and water.
  • Various prevention methods are suggested, such as painting, greasing, galvanization, coating with metal, and creating alloys.
  • A participant outlines potential experimental variables, including different conditions for iron nails (dry, submerged in water, and sprayed with water).
  • Another participant summarizes potential outcomes for each experimental condition, discussing the expected rusting behavior based on the presence or absence of air and water.
  • Concerns are raised about the feasibility of meeting all experimental requirements, indicating a level of uncertainty regarding resource availability.

Areas of Agreement / Disagreement

Participants generally agree on the necessary conditions for rusting, such as the need for water and oxygen. However, there are differing views on the specifics of the experimental setup and the expected outcomes, indicating that the discussion remains unresolved in terms of the best approach to investigate rusting.

Contextual Notes

Some participants express uncertainty about the availability of materials needed for their experiments, which may affect the execution of their proposed setups. Additionally, there are variations in the understanding of the chemical processes involved, reflecting different levels of expertise among participants.

~julz~
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Homework Statement


For my science assignment coming up i need to know more about rusting on iron nails, like how and why it occurs, what conditions help the process, what conditions don't and any other information would be very helpful.
I will be setting up my own experiment so help solve this but I would like to narrow the 'search' for conditions, why and how.


Homework Equations





The Attempt at a Solution

 
Physics news on Phys.org
too easy

4Fe + x.H_2O + 3O_2 \to Fe_2O_3.xH_2O
 
ok, I am only in high school, and I am in year 9, so could you mabye explain it so that i will understand?
 
Iron in presence of water and oxygen, from (flaky) rust on outermost layer of the metal .

conditions necessary:
1. Presence of Oxygen
2. Presence of water

Prevention
-Paiting
-Greasing
-Galvanization
-Coating with metal
-Making alloy (steel) with nickel and chromium
 
So with my experiment, would the variables be...

1. Iron nails outside, dry conditions.
2. Iron nails in water, fully surrounded.
3. Iron nails outside sprayed with water.

Tell me what you think of my experiment so far.
 
1. No rusting would occur due to absense of water
2. Rusting would still occur due to absorbed O_2 in water
3. Rusting would occur due to moisture in air


Variables should be
1. Exposed to both air and water - rusting occurs
2. Exposed to water only - no rusting occurs
3. Exposed to air only



Summing it up

1. Take three test tubes A, B and C (corked)

2. Test tube A [Both air and water] - Iron nails partially immersed in water and air in test tube

3. Test tube B [Only water]- Iron nails fully immersed in boiled water (to remove dissolved air) and layer of oil aove water to prevent O_2 to dissolve in water

4.Test Tube C [Exposed to Air only] - Iron nails exposed to dry air (Use a drying agent like calcuim chloride CaCl_2
 
im not sure i'll be able to get all of the requirements, but i will try to manage with what i have got. Thank you for all your help .ultimate
 

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