Corrosion Rate in Salt Water
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- Опубликовано: 1 окт 2024
- So we have established that moisture on iron causes it to corrode in the rust video, but what about salty water? It is generally accepted that salt water causes rust to corrode quickly but why does this happen?
We put some steel wool to the test in different conditions:
1. Steel wool in air
2. Steel wool in oil
3. Steel wool in water
4. Steel wool in salt water (Sodium Chloride)
Wow...I mean you explained it more interestingly and accurately than my University Lecturer and the usual 1kg of notes. You made me understand this, rather than remember ionic equations. You are a star man!
The corrosion of steel in a neutral pH solution is controlled by the oxygen reduction reaction, NOT the H ion reduction reaction. If you want to prove it. Boil the water to remove the oxygen and see that the corrosion rate decreases considerably, even though H+ and OH- ions are still present.
I am afraid your video is misleading.
Can you provide me with a video that is accurate?
Hi, nice video. I have a question for you. Is it possible to observe release of hydrogen bubbles even slightly during corrosion of steel in salt water, or this requires to add a small amount of acid (for example Hydrogen Cloride) to lower the pH ??
but sodium has a higher reactivity than iron, how come iron can give sodium ion electrons?
I'm not sure what kind of metal they use for offshore oil rigs and submarines and such but that stuff doesn't rust a bit
Thanks so much. This is a better explanation than I have found in 3 hours of research.
I hope this message reaches you.
I absolutely need to know which metal should I use to make steel rust faster in seawater through galvanic corrosion. I hope I've asked this question correctly and also I don't know how to privately message you so if there's a way you could privately message me or let me know if you make a video about this would you please do so?
Thank you
Not much you can do other than to add more salt to the water or maybe some hydrogen peroxide or acid.
thank you! after so long, this guy finally explains it! thank u dude. take care
so what is the chemical reaction for iron rusting in salt water?
Excellent Video. Curious, what role does the Cl- play here?
hello, helpful video. However, the idea that Na+ and Cl- accept es from the oxidizing Fe , swim around and transfer them to H+ ions isn't very convincing. Is there an alternative ( more in depth ) explanation????
mekky3765 Hi Mekky, thanks for your question. Every other source I can find all agree that the salt increases the conductivity of the water, enabling the electrons to transfer more easily in this redox reaction process. For more details on the mechanism here are two links:
corrosion-doctors.org/Experiments/rust-chemistry.htm
and
www.chemicalformula.org/chemistry-help/corrosion
So Na+ accepts electrons but doesn't get reduced? and Cl- swims around carrying an electron from the oxidation of Fe?
Would it be right to call NaCl a catalyst here?
Hi, Im Planning to create a time capsule and i want it to put in the middle of pacific ocean. can you suggest me a container that is available in this time. that can stand corrosion and avoiding salt water to penetrate inside.. for a maximum of at least 200 years. Thanks.
Yes quite the informative video, the information was presented marvellously. Perfectly outlining one of natures quintessential chemical reaction. Thank you, once again my intelligible fellow.
+TheMonkeyNetwork Thanks!
Sir, do saltwater hho will rust Carborator and engine piston from inside and demage it? How to avoid this rusting?
Thanks🙏
its 4 am, i should be watching GoT instead im watching a British/Aussie asian dude explaining something. nice
Great video. One would be amazed at some of the ferrous its i ha e found along the florida gulf coasts
that is the video ive been looking for. Thanks for great explanation
Oh my god, you are the messiah in disguise, you explained this is an easy and intuitive way. Thankyou so much. Although I do have one question does electronegavity play any part in the rate of reaction?
Why doesn't the sodium deposit into the iron when it takes an electron?
Does the same process happen in the body when undergoing oxidative stress?
Ooh, good question! Biology isn't my area of expertise, so I'm not familiar with what that state means.
You have no area of experties, so stop flattering yourself. All the stuff you mentioned in this video were wrong. Do some tests, educate yourself next time before making a video and misguiding people...
Thank you for the lesson 😊
Great explanation!! 👍👍
What is the finally chemical equation for the corrosion of iron in water?
Genius. Class mate dream bra
In this instance would it be correct to describe the salt as a catalyst?
How concentrated was the salt water solution?
I'm sorry, I can't remember. Probably around 1M.
+Angles and Acid Thank you 👌
I like ur accent
Clear explanation, thanks!
How does giving electrons to H+ make rust? Wouldn't this just make the Fe go to Fe 2- and H+ go to H- and nothing else?
Hello, your second question is wrong.
To answer your first question, rust is the Oxidized or "more positive" form of Fe. When Fe gives electrons, i.e. loses negative charges, it becomes more positive, thus making more rust. That is, from Fe to Fe2+ (NOT 2- as you mentioned in your second question)
Thanks Vincent!
Very well explained. Thank you
I love your voice
Quite quintessential
How long would a vehicle take to rust if salt was left on it from over the winter?
Vehicular rust is caused only by the iron building up an electrical charge, since the salt is helping with all of that. Just like a car battery.
The oil from ur skin is bad for guns so i imagine its the same in this situation
Yes I've found the same case with woodworking tools (made of steel). I suspect it's because our sweat is salty, and the oils from our skin might be slightly acidic too.
Nice tie knot, not.
I guess it's knot your cup of tea.
this video was really helpful to me :)
+Sherene Maharaj Thanks for the feedback
Saved my science fair paper
+King.curry Cool :)
If i use a steel rod will it be the same?
+Aiden Hijuelos It'll be slower due to less surface area. You'll have to test it before using it as a demo in class. Rate can depend on surface area and concentration in this case, so it depends on what kind of rod and what kind of concentration of salt you use.
+Angles and Acid Ok im 10 and this is for my science fair so i was going to try and find a normal steel rod and put it in maybe a gallon of water with maybe 1/2 a cp of salt
+Aiden Hijuelos a car battery charger will speed up their process in a matter of hours or days.
That would work but not recommended for 10 year olds on their own, because of the electricity.
Good information thanks for sharing. I like the morbid toaster in the bath tub reference you just casually dropped in there.
Tetsutetsu vs todoroki
wow! that's how fish breathe?!? I just learned one of my most long-lasting questions that were never quite important enough to google! Thats freakin amazing! Thanks man!
No worries :) It's also how CO2 from the atmosphere gets absorbed in oceans - or CO2 gets put into soda/soft drinks. With enough pressure you can force more gas to dissolve (and vice versa).