make CuO (copper oxide) simply and cheaply

[robinhooodvsyou]

-Even cheaper method is to electrolyse a sodium bicarbonate solution with copper metal(wire, pipe, rod, sheet etc),then collecting the sludge and heating it to form black copper oxide.

[Mr71seventyone1]

can i use cu[no3]2 powder please help me out

[ottanicubano88]

@Mr71seventyone1

I don't know, search on internet

[ManganistanDraselny]

@Mr71seventyone1 You can heat Cu(NO3)2 and it will decompose. 2 Cu(NO3)2 → 2 CuO + 4 NO2 + O2

[spotlightman1234]

@CheckOutThisComment Yes i do, but you the decomposition of the hydroxide is a separate reaction Also it is possible to obtain dry pure Cu(OH)2.

[spotlightman1234]

Lol the actual equation is: CuSO4 + 2NaOH --> Cu(OH)2 + Na2SO4

[demnlordd666]

@spotlightman1234 are you sure the reaction isn't CuSO4 +H2O(solvent) +NaOH --> CuO + HNaSO4? both sodium and hydrogen are more reactive than copper and and have the same valence of +1 and the SO4 is -2 . but the resulting sodium bisulfate is a strong acid in water. copper is below hydrogen in activity but hydrogen ions likes oxygen and there would be CuO + CuOH + NaHSO4 + H+ +NaOH to many equilibriums to calculate, stick to heating the cloride or sulfate of copper to get its oxides

[demnlordd666]

@spotlightman1234 the only reason it turned out like your equation is because of your molar rations 1:1 would be a different story.

[DanFrederiksen]

black power? : )

if you do it like that you should probably attach a sign to the bottle so people don't think it's cola and drink it.

[giorulesallofu]

@ottanicubano88 I completed the process using 100% pure of each chem. I still have some light blue condition, even tho i have mixed w/ boiling water, stirred and decanted > 10x. The light blue could either be Cu(OH)2 or copper sulfate. Im not sure which. Even worse, my final product is a medium gray, not black as i had hoped. In solution it was black, it changed when it dried. Any idea what happened? The help would be much appreciated!

[ottanicubano88]

@giorulesallofu

I don't remember if the proportion between NaOH and CuSO4 are exact, many people contact me, I must remake the stoichiometric count...when I have time;

probably in your reaction lack other NaOH and the CuSO4 don't have react totally..

[UTubeisSHIT523441]

@giorulesallofu Just heat it enough in the oven and you will get Copper(II) oxide. Most Copper oxides turns into Copper(II) oxide when heated.

2 Cu(NO3)2 → 2 CuO + 4 NO2 + O2

Cu(OH)2 (s) → CuO (s) + H2O (l)

CuCO3 → CuO + CO2

[UTubeisSHIT523441]

@giorulesallofu Just heat it enough in the oven and you will get Copper(II) oxide. Most Copper oxides turns into Copper(II) oxide when heated.

2 Cu(NO3)2 → 2 CuO + 4 NO2 + O2

Cu(OH)2 (s) → CuO (s) + H2O (l)

CuCO3 → CuO + CO2

However be sure, to heat it for at least 1-2 hours, better 2 to be sure. The last time, I heat up in 250Celsius for 20 min. and it was not enough, which cause some problems later.

[MrAde9999]

@giorulesallofu it is blue beacus it still contains water,

copper sulfate becomes copper oxide when it is heated to 600 degrees celcius when this happens SO2 and O2 is released.

soo u migh need to heat it more

[jlasud]

I made the whole synthesis and after a day I still have small particles of cuso4 in my bottle like 5-max10% in the CuO. I mixed them 1:4 by weight,I heated the solution,stirred it,change water 4 times and still.I'm sure it will stay there no matter what.Is this normal or I messed up something?

[ottanicubano88]

@jlasud

you must dissolve CuSO4 in water before of add NaOH, and NaOH is 1 and CuSO4 is 4 in weight.

[jlasud]

@ottanicubano88 I just did that

[federiconick]

sorry i dont saw very very ingles can you speak in italians plese?

[shmuunk]

What was your yeald? 

[shmuunk]

Also how long did this take aproxametly? :)

[ottanicubano88]

@shmuunk

the yield is very high, the time is little if you heat it much...

[hawk1buster]

Copper Sulfate is sold as a root killer in some not all hardware stores,and can be made at home and i'd like to know what it can be used for besides killing tree roots....NurdRage shows how it's done.

[flamedrag18]

where do you get copper sulfate?

[ottanicubano88]

@flamedrag18

agricultural consortium (it's used as an insecticide)

[rgmcall]

a much easier way is to just get a copper salt like copper carbonate and heat it in a pan it will decompose into copper oxide copper carbonate is easy to make simply get a solution of copper sulfate( drain care Root killer) and add sodium bicarbonate(baking soda) to it it will form copper carbonate and a sodium sulfate solution just filter out the copper carbonate and thats it

[ottanicubano88]

@rgmcall

get a video of it and you make me a response video, can be useful for many persons :-)

good suggestion, congratulation !

[rgmcall]

@ottanicubano88 alright Ill probably post it up soon

[Dima11711]

NaOH + CuSO4 ---Na2SO4+CuO )))))))))))))))))))))))))))))п­олная хуйня!!!!химию в школе ваще проходили?))

[melnadiacillian]

that makes CuOH

[olympicfan2]

the formula for sodium sulfate is Na2SO4!

[Digadogup]

Nice.....

[L1ne3]

that makes copper carbonate doesnt it?

[maxcater1]

what song is this

[ottanicubano88]

@maxcater1

it's a Linkin Park's song but I don't remember the title..

[BlakM0nkey]

@maxcater1 "what i've done"

[MiladyOfDawn]

@maxcater1

what I've done - Linkin Park

[lemorpion1]

i like it.tell me would this work with nickel sulfate?will this work with potassium hydroxide instead of the sodium?

[ottanicubano88]

@lemorpion1

yes, I think.

[Gmc42082]

@lemorpion1 you can't replace the CuSO4, but KOH will work better, K is easier to remove from the Cu, and small amount of Na contamination kills the colors for fireworks. if you use nickel sulfate you will end up with Nickel hydroxide.

[puturoi]

уравнение реакции правильно напиши, тупица

[ottanicubano88]

@puturoi

тупица больше!

[freakin1random]

wtf, why would you use aluminum with copper oxide....use magnesium and it fucking explodes.

[ottanicubano88]

@freakin1random

look the video on youtube about CuO/Al then you will say....

[nickalisse]

For how long did you leave the hydroxide on the radiator??

[ottanicubano88]

@nickalisse

I don't remember well, but should to be about 1 hour, depend from the temperature of radiator..

[0159352]

whats the ratio?2:1?

Great;) 5*

[antiswattt2]

why not just heat some CuSO4 alot in a steel can? (:

[Peterditaa]

well you get pested with SO3 and you need very very high termperatures. Its more useful to Dissolve it, and make the carbonate or hydroxide out of it. then just heat the filtered carbonate or hydroxide, and youll get very pure and nontoxic cuO

[antiswattt2]

great, then i can lead it iinto some water :P H2SO4 ^^

but carbonate.. is a salt and hydroxide is a salt.. thats the same as saying copper barium o.O or nitrate chlorate

[Peterditaa]

-.-

no comment...

[antiswattt2]

lol.

[pyropakman]

Epic fail on the equation, dude.

CuSO4 + 2 NaOH---> Cu(OH)2 + Na2SO4

Cu(OH)2 ----> CuO +H2O

[ottanicubano88]

no isn't normal, you must separate it from impurities !

[pyro57sapiens]

i did! about 20 times!! the way that you sowd in an even bigger bottle!

[pyro57sapiens]

when i did this i boild down beacuse i did se som copper hydroxide, and my powder is mostly black but a littel gray and red too!? is this normal?

[zcuttlefish]

actually the best way to get your PPT out is just to catch it with filter paper. Then you pour hot distilled water over it to wash away water-soluble impurities (like residual NaOH, CuSO4 and Na2SO4) I also have a way to speed drying- I'll post a vid a bit later

[jacubv]

finaly a normal easy way to make copper oxide

great guide' but what about the left over of NaOH of CuSO4?? both can fuck up a pyro mixture

NaOH in some cases can get mixture to spontaniusly ignite and make couse burns in case of touching it

and CuSO4 is hygroscopic, any way to remove leftovers of NaOH without affecting the CuO?

[KronicChem]

stick it in a filter and pour water on it. NaOH is soluble, CuO is not

[ottanicubano88]

the just reaction is:

2 NaOH + CuSO4 -> Cu(OH)2 + Na2SO4

then the Cu(OH)2 is decomposed in

CuO+H2O.

you excuse to me for the error !

[ThisIsPyrotechnics]

The difference is that i typed out my equation within a few seconds whereas you had to research it.

[ThisIsPyrotechnics]

I believe the reaction is CuSO4+NaOH-----> NaSO4+CuOH

CuOH is the blue gel like precipitate that forms, where it decomposes in to CuO when heated.

[TheFluorineMartyr]

Afraid not! ottanicubano88 has it correct:

2NaOH + CuSO4 > Cu(OH)2 (blue) + Na2SO4

Cu(OH)2 > CuO + H2O