NaOH + CuSO4 Reaction 🧪🧪🧪 One of my Favorite Chemical Reactions

[@wbreslyn]

Note, the equation shown in the video isn't balanced. If you wanted to balance it you'd just need a "2" in front of the NaOH.

[@ep9415]

2NaOH(aq) + CuSO4(aq)= Na2SO4(aq)+ Cu(OH)2(s)

[@snehajain4334]

I was wondering the same thing

[@angeladaniellar4289]

I’m not even in chemistry no more but your videos helped me a lot last year on college chem

[@wbreslyn]

That is good to hear!

[@devphalswal419]

Actually it is

[@wbreslyn]

@@devphalswal419 Indeed!

[@sagorchowdhury134]

He is talking his scientific words Me: haha pretty colour

[@wbreslyn]

Sort of AMSR with pretty colors.

[@aaronhis5204]

My personal favourite reaction: Water and saliva at 3 Am.

[@wbreslyn]

I hope it doesn't form a blue precipitate!

[@tuegia6060]

NaOH + CuSO⁴ -> Na2SO4 + Cu(OH)2 , the blue thingies we see are Cu(OH)2. Despite being a bazo, Cu(OH)2 doesn't dissolve in water. We can use this to know what is in the unidentified bottles of solutions to see if there was any Cu2+ in them or not. ( My language is not english, my deepest apologies if there was any grammar or vocabulary errors in this comments). Great video btw ❤❤

[@wbreslyn]

That's very interesting! I also found that the Cu(OH)2 will convert to CuO after a while if there is excess NaOH present. (PS - your English is excellent)

[@paromitabanerjee2102]

This is a double displacement reaction which has a precipitate in its product hence also known as a precipitation/precipitate reaction

[@wbreslyn]

@@paromitabanerjee2102 Agreed!

[@Spextori]

Hello, are you Vietnamese by the way?

[@2EntireLegs]

Bazo is spelled base in english

[@lightcapmath2777]

Dr.B I remember doing this in chem lab, I dried out Cu(OH)2. it was a light blue. When adding some water it turned dark blue. It bring back memories. Thank you David

[@wbreslyn]

That is very interesting, David. I have a watch glass left over from the reaction and part is very dark blue and part is light blue. There is some interesting chemistry going on! Doing a bit of online research I find "Copper hydroxide Cu(OH)2 is metastable. It easily transforms into copper oxide CuO more stable, either in the solid state by a thermal dehydration or at room temperature, in aqueous basic solutions." Source: www.researchgate.net/publication/243329642_The_transformation_of_CuOH_2_into_CuO_revisited So I'm thinking that there was left over NaOH and some of the Cu(OH)2 is now CuO. You may be thinking of CuSO4. It is powder blue when dehydrated and a beautiful blue when water is added. The reaction can get rather warm during the hydration. I should do a video on that! CuSO4 is one of my favorite compounds.

[@lightcapmath2777]

@@wbreslyn Sir. yes sir! ..Dr B D:)

[@p.i7122]

@@wbreslyn after preparing cu(oh)2 you can add some glucose and then heat it . It will be very beautiful . This reaction is very used in organic chemistry .

[@wbreslyn]

@@p.i7122 Sweet! I still have the Cu(OH)2 and will have to filter it off and give this a try.

[@p.i7122]

@@wbreslyn if you have finished the reaction cuso4 + 2naoh you can do it on the place .

[@tejasphirke3436]

If each reaction is explained in this way then chemistry might become easier for every student

[@wbreslyn]

That's my goal!

[@Calyrekt]

This is a very cool reaction, thanks for your videos helping me through chemistry!

[@wbreslyn]

Happy to help!

[@somebody5126]

Thank you even as a medical student i benefit from this video . Thank you

[@dipi_amv]

Sir you teaching best chemistry

[@DD-kc6hg]

I did that at home once, I made Cu(OH)2 I was so happy with myself for doing this reaction when I was in 9th grade. I didn't know what to do with Cu(OH)2 so I just dried it and kept it in a small plastic bottle.

[@wbreslyn]

Pretty awesome for 9th grade! You could add HCl and make CuCl2 and H2O.

[@defeatist3463]

This was my 12th grade chemistry project! It was the synthesis of rayon threads and I had to make it in the lab.

[@wbreslyn]

Nice!

[@abuzarazhar7959]

This is the coolest blue I have ever seen.

[@wbreslyn]

Copper can form compounds with some awesome blues and greens.

[@pressaltf4forfreevbucks179]

@@wbreslyn it all makes sense now cuz the blood of octopodes has a blue-ish color and their blood cells contain copper instead of iron to transfer oxygen throughout their body. Pretty damn cool

[@wbreslyn]

@@pressaltf4forfreevbucks179 I didn't know that! Evidently snails and spiders too.

[@Luca_Talis]

Love watching your videos!

[@wbreslyn]

Glad you like them!

[@preritsharma329]

Just the channel I was looking for! Finally I'll be able to see my 10th grade actual practicals and not just memorize some equations and colours xD Great work btw!

[@wbreslyn]

Awesome! All the best in 10th grade!

[@preritsharma329]

@@wbreslyn Thanks!

[@mikulramesh7006]

I'm studying inorganic chemistry and it's a great video to understand recations

[@wbreslyn]

That is great to hear!

[@SAMAD2804]

Your videos are amazing bro💙 I love chemistry now❤️

[@wbreslyn]

Happy to hear that!

[@cheatgaming8978]

NaOH + CuSO4 = Ice cream

[@wbreslyn]

I'm not sure it would taste very good! Bases tend to be bitter.

[@Sadf430]

It's a lovely double displacement reaction

[@wbreslyn]

One of my favorites!

[@sathyam1648]

Nice reaction sir I'm to like it

[@wbreslyn]

Awesome, thanks!

[@somerandomguy84]

As a chem teacher, this reaction is always a clean, safe bet! My kids always ask "when can we blow something up with sodium/potassium/etc" and honestly I'd love to but stuff like this is the next best thing (and way safer) haha

[@wbreslyn]

I agree completely! It's also a great reaction to refer back as they learn about types of reactions, ions, balancing equations, etc.

[@yananana7310]

This is so cool! Thanks for the video

[@wbreslyn]

Glad you liked it!

[@AdityaKumar-gv4dj]

Woah! you are a chemist man! 😀😀😁😱😱

[@wbreslyn]

🧪!

[@nurrokhman7589]

C4h¹0 is?

[@fernoronha8936]

Hey do you know what order this reaction is? Im trying to determine the reaction rate but i don't know the order of each reactant

[@vanshmahajan367]

It should be cuso4+ Naoh as NaOH + cuso4 ( copper cant displace sodium so reaction will not occur)

[@wbreslyn]

It doesn't really matter if we write CuSO4 or NaOH first since they are all mixed together in the beaker. And this is a double displacement reaction so we aren't as concerned with the activity series.

[@haphuongnguyen6265]

I am class 9B when i watched i very exciting .and i like it

[@wbreslyn]

Awesome!

[@johnm6713]

Thank a lot for this information.

[@wbreslyn]

You are most welcome!

[@nguyenduyhai7606]

Sorry I messed up last time. This is the accurate experiment: CO2 + Ca(OH)2. Slowly add CO2 into aqueous Ca(OH)2 At first, white precipitate forms: Ca(OH)2 (aq) + CO2 (g) --> CaCO3 (s) + H2O Later on, when the Ca(OH)2 runs out, white precipitate starts to dissolve: CaCO3 (s) + CO2 (g) + H2O --> Ca(HCO3)2 (aq)

[@wbreslyn]

Interesting!

[@abdullahs6506]

Nice 👍

[@chadmuscles]

Cool!

[@wbreslyn]

😎

[@brycechryson5686]

Your like Nilered with a different voice actor lmao.

[@wbreslyn]

NileRed rocks!

[@shikharupadhyay1114]

KAl(SO₄)₂·12H₂O + K₃[Fe(CN)₆] then what Compound will be formed ???

[@ace_tmt3716]

Whats your concentration?

[@Rei-gs4xo]

This video can be legend

[@wbreslyn]

I hope so!

[@kesavan10a4]

Mr. Wayne Breslyn can u do a experiment on thermal decomposition of FeSo4 (Ferrous Sulphate)?

[@wbreslyn]

I'll put it on my list!

[@LiborTinka]

Unfortunately the metal hydroxide precipitates are often gelatinous, hygroscopic and tend to stick to water and impurities (e.g. hydrates of Na2SO4). The hydroxide precipitates tend to clog filters. I rather use carbonate or sulfide precipitation to obtain cleaner precipitate. Both work but the sulfide is less soluble.

[@wbreslyn]

Interesting. I know what you mean about the gelatinous consistency. In some way it makes for a fascinating looking reaction. But it is a bit messier.

[@thanhthao9a169]

CUSO4+NAOH->NASO4+ CU(OH)2 FE+ HCL -> ......+........... Đố ai làm được

[@bandaraelliyadda2174]

Ah ,I had done this before ,The NaOH solution was a bit warm because the NaOH dissolving is exothermic, So the Copper Hydroxide immediately turned into black Copper Oxide !

[@wbreslyn]

That also happened for me in this reaction after a while! The Cu(OH)2 isn't very stable in alkaline solutions. I had excess NaOH so I eventually ended up with CuO.

[@anupamchakrabarti4657]

That was wonderful!

[@wbreslyn]

Thanks!

[@entertainingfootball4871]

Is you post only chemistry related topic or some other content ?

[@wbreslyn]

I do a bit of math every so often but mostly chemistry. That's really my area of expertise.

[@ហឿនវឌ្ឍនា]

Wow so amazing

[@wbreslyn]

Thank you!

[@amritpalkaur6530]

Very cool reaction ❣️ I am belongs to India punjab

[@wbreslyn]

Awesome, thanks!

[@aquaregia7004]

The dark bule precipitation at 1:04 seems to be Na2[Cu(OH)4]

[@wbreslyn]

There must be excess NaOH, that would be my guess.

[@minnamsl4549]

Please , shouldn't the reaction be like that : 2NaOH+CuSO4 ==> Na2SO4+Cu(OH)2 ?

[@wbreslyn]

That would be the balanced equation, yes.

[@balajisharma9980]

In surface chemistry , these reactions are usually called " suspension reactions" Colloids work in a similar way

[@wbreslyn]

They do produce a rather gelatinous solid. Like this one I did with MgSO4 and NaOH: kzbin.info/www/bejne/Y2SwqJ6mrL10m8k

[@balajisharma9980]

@@wbreslyn impressive I am not a chemist , but I have my fair share of knowledge in it and am quite good with material science . We deal with a lot of these suspensive reactions in adiabatic conditions

[@wbreslyn]

@@balajisharma9980 Interesting! Why in adiabatic conditions?

[@balajisharma9980]

@@wbreslyn some reactions are exothermic Containing the heat with proper insulation helps us study the heat transfer characteristics

[@wbreslyn]

@@balajisharma9980 Ah, that makes sense.

[@napatlertthanaphol40]

Sir, what if you change the precursor to Cu(NO3)2.3H2O, does the reaction will the same? And how concentrate of NaOH solution did you use in this video?

[@wbreslyn]

Hmm. I'd say the reaction would be similar. Cu(NO3)2 + NaOH = Cu(OH)2 + NaNO3. So you'd still get the Cu(OH)2 which is the precipitate in the video. For this I used a fairly concentrated (but not saturated) solution of NaOH but I didn't measure. Probably around 3M.

[@elitehumpty3603]

Wow 👀 Chemistry - Pain and Beauty

[@wbreslyn]

Indeed!

[@Tacholoco]

The equation at 0:34 is wrong... it hast to be 2NaOH+CuSO4->Na2SO4 +Cu(OH)2

[@wbreslyn]

Agreed, it isn't balanced. The interesting is part is the reaction though!

[@aarushhuh]

Doesn't NaOH or Other Aqueous Chemicals React With Water As They Are Not Concentrated and Mixed With Water

[@wbreslyn]

It'll dissociate readily since it's a strong base. But here it reacts with the CuSO4 rather quickly to create the Cu(OH)2 precipitate.

[@aarushhuh]

@@wbreslyn what about other aqueous solutions?

[@wbreslyn]

​@@aarushhuh I suppose it really depends on the aqueous solution. For example, in NaCl(aq) it wouldn't react.

[@aarushhuh]

@@wbreslyn ohk. It depends on the chemical

[@jijauganesh1264]

These forms a blue precipitate

[@wbreslyn]

🧪

[@adalest.]

But why is this reation your favorite?

[@wbreslyn]

The color is a big reason, but also the shape the precipitate forms. It is so very defined.

[@ktefccre]

What do we do with CuOH2?

[@wbreslyn]

I used excess NaOH so the solution was still alkaline. The Cu(OH)2 then decomposed into CuO + H2O. So I suppose the question is what to do with the CuO. Not sure I have an answer!

[@neuralwarp]

I thought all hydroxides were soluble?

[@wbreslyn]

Actually most are insoluble. Group one hydroxides are soluble as well as Ca(OH)2 and Ba(OH)2. NH4OH as well. But that's about it!

[@Pooja_9771]

Great👍

[@wbreslyn]

😊

[@CuhsiNo]

Cool Dr. b

[@wbreslyn]

Thanks!

[@deepokdeb9426]

DR Breslyn What is ur Age?

[@wbreslyn]

Good question, what do you think it is?

[@wbreslyn]

@@jatre5938 Off by exactly 20 years!

[@krishgarg5360]

Cao+h2o plz

[@wbreslyn]

Like this? kzbin.info/www/bejne/aobTkppnqddrf9k

[@krishgarg5360]

@@wbreslyn actual ones and can u make CaCO3 and then heat it and again form CaO like CaO+H2O-- Ca(OH)2 Ca(OH)2 + CO2 -- CaCO3 CaCO3 heat -- CaO

[@Ram-l6u]

Do you have any phd positions available?

[@DrBs-Other-Channel]

Sorry, not at the moment.

[@Ram-l6u]

@@DrBs-Other-Channel Are yourself creator of this content ? I'm not sure it happens to be 2 different accounts. Any where can I contact you formaly for future endavour

[@wbreslyn]

Yeah, it's me. I was working on a small channel where I put random videos. So it came up as MagnetsAndMotors. Usually if you comment on a newer video I'll see it and reply - that's the best way to reach me with questions.

[@muhammadkaif3883]

👍👍

[@wbreslyn]

🧪!

[@tronguc4347]

i like Na2Cu(OH)4

[@wbreslyn]

What is interesting is that when you leave the Cu(OH)2 in solution, if there is excess NaOH, this happens: Cu(OH)2 = CuO + H2O I left the beaker out after doing the video and the blue precipitate had turned to black (CuO).

[@yarenheda]

Turkish chemistry is hard but i listen english chemistry because why not 😂😅

[@wbreslyn]

😊

[@halaskoronenquanganh5287]

Cool

[@wbreslyn]

😎

[@krishgarg5360]

Make all the products from brine solution

[@wbreslyn]

For this reaction I could make the NaOH from brine. But brine doesn't have Cu (over a very, very small amount) so that would be difficult.

[@krishgarg5360]

@@wbreslyn I am saying about HCl NaOH and baking soda and other things which can be made from brine

[@wbreslyn]

@@krishgarg5360 Ah, I see. I should make a video about that, it's interesting stuff!

[@kesavan10a4]

@@krishgarg5360 hey bro are u Indian student of class x

[@krishgarg5360]

@@kesavan10a4 yes

[@rizwansangah8665]

I have to make a project that's why i have to need of your help Can u ?

[@wbreslyn]

Maybe, what is your project?

[@massaaborashed6318]

How is this protein detected?

[@wbreslyn]

This might help: bio.libretexts.org/Bookshelves/Biotechnology/Bio-OER_(CUNY)/02%3A_Chemistry/2.09%3A_Proteins

[@massaaborashed6318]

@@wbreslyn ook thaaanks

[@munost]

same

[@munost]

ratio

[@masroorahmadbani1712]

I am a science student yet I want to eat the Cu(OH)2.

[@wbreslyn]

Sort of looks like Smurf food. But enough would likely give you seizures 😰

[@mufaddalmakada9654]

It was Just asked in my exams 😂 3 day ago

[@wbreslyn]

Wow!

[@fiqinata]

NAOH CUSO

[@joecampos1375]

👍

[@wbreslyn]

Thanks!

[@sxrqr2304]

Analytical Chemistry.

[@wbreslyn]

Hey, that's one of my favorite things! pubmed.ncbi.nlm.nih.gov/8620108/

[@ritwik8830]

You think this looks good? Wait till you see him using iron(III)sulphate😎

[@wbreslyn]

Yes, that would a good one to do!

[@ritwik8830]

@@wbreslyn or by using copper sulphate and ammonium hydroxide. It will be a more interesting reaction considering the way it changes colour

[@wbreslyn]

@@ritwik8830 Actually I just tried it. Wow, what a deep blue. I'll have to do a video on that soon! It is interesting because it is a lighter blue first, probably Cu(OH)2 but then a complex must form.

[@ritwik8830]

@@wbreslyn indeed, it is very interesting😀

[@user11589]

くっそ..

[@wbreslyn]

はい！

[@malayali8469]

I dont like chemistry buttttt 😁😂