Reaction of copper with nitric acid
Declan Fleming shows how copper can in fact react with some acids by demonstrating the reaction of copper and nitric acid, producing a visually stunning reaction. Read the article that accompanies this video in the November 2011 issue of Education in Chemistry at rsc.li/EiC611ec
This is part of the Education in Chemistry Exhibition Chemistry series: chemistry demonstrations to capture your students' imaginations: rsc.li/EiCExChem
Пікірлер: 248
Yes, you can dilute it with deionized water, and if you add NaOH (sodium hydroxide) a drop at a time, a blue precipitate will form, Cu(OH)2. Copper hydroxide. You can test the liquid after several drops at a time with litmus paper to know when it's turned basic. Add more water and heat, stirring until it boils, and the Cu(OH)2 will turn into CuO, copper(ii) oxide. Filter this, and use H2SO4 (sulfuric acid) to drain it into a beaker, then add zinc, which will dissolve and leave you with pure Cu.
@HariKrishnan-he6fc
2 ай бұрын
Brother presence of Ca,Fe,Al in about 0.1g / L will it affect Cu(OH)2 precipitation?
Love this demonstration, first saw it at my highschool. The reaction is quite violent but really cool to watch.
Man, chemistry has fascinated me from a very early age, when I found my uncle's old flasks, beakers, and test tubes. It's too bad I never actually got into it though, because damn, this stuff is awesome.
Lovely concise demonstration. Thank You
Great video, well-done team, thanks for sharing!
That's an incredible color.
@jordanelliot2419
3 жыл бұрын
Pro tip : watch series at InstaFlixxer. Been using them for watching lots of of movies recently.
@lancecarl8649
3 жыл бұрын
@Jordan Elliot Definitely, I have been watching on InstaFlixxer for since december myself =)
That blue is so nice
@GokantheHusky
9 жыл бұрын
That blue is called azure blue.
@joshuahaines795
9 жыл бұрын
Shodan Computer Search Engine It's more of a sky blue. Azure is slightly darker. At least if you're talking about the end product. And that's just my opinion. Anyhow, that blue is pretty. And blue.
@Themuffinman488
8 жыл бұрын
+ben stedall And that car isn't
So this is how they make Nuka Cola Quantum. No wonder so many wastelanders die.
Excellent and inspirational video. I will recommend it to my collegues.
i had to research an interesting chemical reaction and write about it for my chemistry homework and found this, THIS IS SO COOL!!!!! WHAT THE HELL I LOVE CHEMISTRY!!!
Mana potion!
@Arastelion
9 жыл бұрын
Magic for days!
@GokantheHusky
9 жыл бұрын
XD
@Lost_Souls_Gaming
8 жыл бұрын
YAY! Now I can restore my mana. :D (\ô/)
Thanks! I'm brand new to this, so catching on pretty good :D
Our teacher demonstrated this to us on our third day of school and it was awesome!
In our ASAP Chem Class the Nitric Acid was concentrated to 15.8 Molar just a ballpark range
Just beautiful!
I'm doing this lab in a couple days. Now I can't wait.
Beautiful!
Follow up question. Once the NO2 dissolves into solution near the end, what would we have for a final product. Not pure Copper nitrate solution correct?
That's a really awesome blue!
I did that whole process as a laboratory experiment in my chemistry class :D
@nikola96uf he mentions at 1:22 that the water is pulled up after the reaction cools down. when the gas cools, the pressure in the reaction flask is lowered enough to create a sort of vacuum effect
I need your help badly. I am preparing NO2 gas in lab from this reaction by adding 1g of Cu to 2ml of HNO3. But how do i quantify them, how do i present in an article because pressure cannot be calculated iwhile its preparation
Wow that's a lot of NO2, you can prevent the formation of NO2 by using hydrogen peroxide in with the nitric acid, to oxidise the NO2 back to HNO3 as its formed. This way you get more efficiency from the acid, able to react with a larger amount of material.
Wow, that was amazing.
What is the chemical decomposition of the blue color?
Beautiful.
best chemestry question ever!
very nice experiment
I need help. How to get the solubility of copper in nitric acid thanks
This video is helping people after 9 years in chem test
so what is in the flask at the end? I presume nitric acid, water and copper nitrate?
how to know the solubility of the copper in nitric acid?
Now THIS is what every middle and high-school student dreams of doing! :D (I know I did!)
What is the tube called that is transporting the water from one flask to another? How and what is causing the water being absorbed by the tube that goes from one flask to another?
@declan.fleming
9 жыл бұрын
Collectively we just call these delivery tubes. The water is drawn back in in a process of "suck back" - the air in the main flask gets quite hot during the reaction and expands. As the reaction subsides, heat is lost to the surroundings and the gas begins to contract, drawing the water back up the tube as the pressure drops. This would only happen a little but for the water then dissolving the NO2 gas in the flask .. as gas particles dissolve in the water, the pressure drops still further and draws even more water in, dissolving more gas .. etc etc.
what concentration does the acid need to be at
ooooh the blue looks so pretty
You should use low concentrated nitric acid in the second flask because the nitrous gas can disolve in it. It will absorb much more than plain water.
Can i lead this gas into the reciever flask of a distillation of concentrated sulphuric acid and a nitrate salt to create very concentrated nitric acid, near 100%?
Very helpful
can someone explain what exactly the glass wool is doing?
This video is awesome 🇺🇸👑💕
that is such a beautiful colour at 2:10 wow
how long will the blue glow last?
I have some gold with bits of copper that i dont want. Can i use nitric acid to get rid of the copper with out removing the gold?
Thank u very much! :D
The water is also used to recover the nitric acid, right?
now how do you get te copper back out?
The green material produced at first in the reaction is not copper nitrate. Copper nitrate or rather the [Cu(H2O)6]2+ ion is blue. The green color is due to a copper II nitrato complex. Exact structure of these complexes are not known,but equation below is a likely possibility. Equations Cu + 4 H3O+ + 4 NO3− → [Cu(H2O)4(NO3)2] + 2 H2O + 2 NO2 [Cu(H2O)4(NO3)2] + 2 H2O → [Cu(H2O) 6]2+ + 2 NO3−
NICE!!
at 3 points in this reaction I was expecting a explosion and pain
HOW TO TITRATION OF RED COPPER OXIDE ANY IDEA
wow. that's amazing
so cool
What Reaction Type is this?
is this a redox reaction
Nice color
What sorcery is that?
Awesome
As he said, it's there to hinder the hazardous gas from leaking out
I did this with copper coins and i got some orange paste as a product what us that stuff
Cool stuff. Now show us something with fluoroantimonic acid!!!!
I don't think so, remember there is still the Cu(NO3)2 in solution. You might be able to precipitate it out and treat the remaining solution like you suggested, but I would ask your local government or waste disposal service for more specific advice.
I need Mana will this help
Try to dissolve aqua regia a copper and alluminum.it is true i can make a new nictric acid? Messgae me please thanks
Does anyone know roughly what concentration the acid held?
@myfeet77
7 жыл бұрын
Maddie Tveite most likely about 16M, I did it with 15.8M HNO3
Thankyou 😊
I miss my High School chem classes! 😛😁
The blue green at the start is not copper nitrate-- it is a nitrato complex. The copper 2 ion is blue and is formed when the water is pulled into the reaction vessel.You can find the equation on this video and a literature citation which explains details of the reaction. kzread.info/dash/bejne/epiC29eneNjUpNo.html
@declan.fleming
9 жыл бұрын
very cool! .. thanks for sharing :)
@dalbysc
9 жыл бұрын
Declan Fleming You are welcome. Send me an email and I will send you a pdf of the article we did on the reaction. ddalby@charter.net
@TheJvlustosa
8 жыл бұрын
Whats the formula for the complex?
@dalbysc
8 жыл бұрын
Did I send you PDF of the publication concerning this demo? Here is a portion from the article. On the basis of the spectra of the solution and the reported equilibrium constants, the equation for formation of the green solution is [Cu(H2O)6]2+ (aq) + NO2- (aq) = [Cu(H2O)5( NO2)]+ (aq)+ H2O(l)
@declan.fleming
8 жыл бұрын
you sent it to me thanks - I asked about getting the correction added as a note over the top of the video. I will bring it up again :)
Why does cuno3 does not show it's colour without water
The green material produced in the first flask is not copper nitrate. Copper nitrate or rather the [Cu(H2O)6]2+ ion is blue. The green color is due to a copper II nitrato complex. Exact structure of these complexes are not known,but equation below is a likely possibility. Equations Cu + 4 H3O+ + 4 NO3− → [Cu(H2O)4(NO3)2] + 2 H2O + 2 NO2 [Cu(H2O)4(NO3)2] + 2 H2O → [Cu(H2O) 6]2+ + 2 NO3−
Nice sir
I am not getting how is it happening because copper is below hydrogen in reactivity series
In the reaction, isn't it supposed to be NO as a product instead of NO2?
@Francinun
6 жыл бұрын
Thank you!
cool refreshing drink
that's kool
is this is en exception to the rule that acid with metal forms salt and hydrogen but wheres the hydrogen
What is meant by " the water negates the copper ions"?
@georgewilson5837
7 жыл бұрын
Is it something to do with ligands?
***** what about Mercury+Dry Ice+Lava(or Hot Water +200degrees) ? can u make it :)?
sweet...
as mr bean would say: MAGIC!
nice that's cool!
@kaidentaylor4368
9 жыл бұрын
Ikr
WHAT TYPE OF REACTION IS THIS AND WHY
@royalsocietyofchemistry4447
5 жыл бұрын
Hi Nattiebee, for more info you can read the article that accompanies this video here eic.rsc.org/exhibition-chemistry/dissolving-copper-in-nitric-acid/2020047.article
What type of chemical reaction is this?
@chahevartanian2066
5 жыл бұрын
Edward Sanders ox red
So it makes copper nitrate?
NIIIICE! :D
Why there’s reaction between copper and nitric acid, not hydrochloric acid?
I fawkin love science!
why water sucks back to the flask?
@TheRubliux Yep
WOW, WOW & WOW!!!!!
How to make a mana potion
@surajpatel2877
10 жыл бұрын
Go to Walmart and get this bottle called a placebo.
@joshuahaines795
9 жыл бұрын
jorgen485 if you don't mind drinking copper then sure
@cheesewizard8943
5 жыл бұрын
Except then you get a deadly poison effect
why it pulls water
Can this be performed at a desk without a fume cupboard ???
So thats how they make them!
If I saw this in high school I wouldn’t have to become a phd in chemistry to have my own humehood
Why would copper react with hno3 and not hcl?
@chemistrywaalla
7 жыл бұрын
Get Like Me.. Probably bcoz nitric acid is very good oxidising agent whereas hcl is not... It is not acid displacement reaction but redox reaction majorly :))
Any way to recover copper from this?
The only question now is: Will this restore my magica?
Because the flask cools down and the gas lowers in volume and sucks in the water which cools down the flask even faster
What about Mercury with antimony oxide.. Red Mercury?