Galvanic cell

[IBMua]

Nice vid. I'd like to hear something smarted instead of "more active" metal. Like less electronegative / ionization energy talk..

[edisonmichael1]

very precise and comprehensive explanation .I was looking for the function of "salt bridge ". Finally got it. thanx for the uploader.

[bladybrunch]

wah, this video makes me kinda like chemistry

[DasPhilosoph]

Very good animation

[LuxonGuildftw]

thank you so much !

[himanshurwt09]

great..[;-/]..



[MissEverChanging]

Thanks for that! I always watch this video at the day before my chemistry tests, it's a good reminder!

[elektra4757]

thank you sooo much! my professor is such a pain in the butt,God..why hasn't he explained like this? -.-

[boozerTA]

Wow after one year I finally understood why Zn oxidizes instead of Cu.

Damn those professors who never tell WHY.

[10tigro]

wow thanks to whoever made this

[enxhi9]

can some1 tell me how 2 save it in my pc.. i want this 4 my project..but dnt know how..thx

[tsotsi23]

RAC - Reduction at Cathode

OILRIG - Oxidation Is Loss, Reduction Is Gain

Shits the best!

[secretxxsmiles]

why is there a loss of ions in the copper sulfade solution?

[Syncopic1235]

@secretxxsmiles Because the ions change from CU+2 > CU which is solid, so less (AQ) state copper dissolved in the sulfade solution. That's what I think.

[KPopRefrains]

i need it in german :<

[BluntActivist2008]

@KPopRefrains No, you need to learn English.

[815foreverlost]

thank you! thank you! thank you! i FINALLY understand!

[Renolie]

I watched so many videos on this, I finally understand!!!!! Thanks so much :D

[amy449449]

thank you so much..EXCELLENT video!

[zashakakay]

Wow thx!!!!

[R0pps]

@discarburat0r and others: it´s a blessing for us, we have so much media around us. you just have to recognize it. today, learning is not about sitting in front of the explanation from a book for hours until you understand it - today learning is about doing research WORK until you find the right explanation for yourself. that is a lot of time saved i think, though it seems frustrating at times!

[BanglaGamer123]

OMG! 1hr 20min of teacher's lecture couldnt get into my head, they make it so damn complicated. My teacher goes like "OK students now that you know the basics, lets get on to the details WHICH WILL BENEFIT YOU FOR THE NEXT YEAR..." why dont you just teach us whats on the syllabus?

[Thegeaza]

ive got one problem. how do u tell a cathode from an anode.

[BanglaGamer123]

@Thegeaza anode is where oxidation(losing of electrons) takes place and reduction(gaining of electrons) occurs at cathode

[vladaman1]

@Thegeaza oxidation happens at the anode and reduction happens at the cathode

[NunoAer]

Very nice video. Do you know where can I find a similar one that explains how are electrons conducted by ions?

[tchisowa]

awesome!!!!!!

[ajith241981]

good explanation

[ploy470448]

thank you soooo...soo much!

[barbaralove1]

this video is extremely clear even though i had figured how it worked out before watching this video....

[georgica303]

this is so simple, wtf is wrong with teachers

[DivisibleByWaffle]

Thank you! I have a midterm tomorrow, and this makes things much clearer.

[OhMaeGawd]

omg thank yooh O_O

[kyo992]

THANK YOU WHOEVER CREATED THIS VIDEO

[Nuushan]

This is the Shit! THANK YOU SO MUCH!

[mika20057]

thank you for making this so simple, i couldn't even understand the explanation on the for dummies website, and that was more complicated than this!

[DISCARBURAT0R]

why our lecturers making all this stuff so hard ? 1 minute of video saved me ~ 30 min of explaining by lecturer =\

[janitarjanitar]

@DISCARBURAT0R

your a much more visuale learner pal.  i for one cant retain material unless i read it out of a book

[basslinet]

@DISCARBURAT0R I guess that its for greater understanding

[jeroen300]

@DISCARBURAT0R and my teacher didn't did it right either!

[mitta01]

@DISCARBURAT0R jjaja



[totallysari]

This saved my life.

[krissygann]

Thank you for saving our lab reports. We were so confused on how batteries work and this cleared everything up. ~Shawna and Hannah

[osa01256]

i can't understand the way the equation was written at the end of the vid.

[CocolutoBeans]

This is a first class cartoon of a galvanic cell.

Thanks!

[rinaldiputra]

thx for the vid

[dholmdahl]

wouldn't it be better to have an insoluble salt bridge such as potassium nitrate? With sodium chloride, won't NaCl be a limiting reagent? But with potassium nitrate the salt bridge would allow Zn-ions to move over to the copper side and so4(2-)-ions to move the other way.

[gimli129]

It's a good video to learn everything about the galvanic cell thx

[LutschI7]

the video is very helpfull

thx!

[Makedonche]

Good video, but the salt bridge should be made of a soluble inert solution, such as potassium nitrate. Chloride in this case might not react, but if the anode was silver, chloride ions would react forming a precipitate of Silver chloride.

[graphicscardlover]

Sorry if this question is stupid; would the reaction still occur if the zinc sulfate solution was replaced with water? Please explain if it doesn't.

[malubayraymond]

because we need ions, if we create ions from water, it would be a lump of gas. btw, we also have water in both solutions of coppersulfate and zinc, water melts them both, thus it is called an aqueous solution and its electrolytic.

[SirBroadsword]

graphicscardlover:

Well as you probably know, the zinc sulphate (you're spelling sulphur and sulphate incorrectly, by the way) solution is already largely water. Since the ions in the solution aren't part of the reaction, I don't see why using pure water instead of a zinc sulphate solution wouldn't work...

[SirBroadsword]

You would, however, expect to see no reaction taking place if you replaced the copper(II) sulphate with pure water as water isn't a strong enough oxidant to cause the oxidisation of zinc metal (whereas copper 2+ ions are a strong enough oxidant).

[leslymew]

esta animacion me parece muy buena, pero me gustaria que estuviera en español

[sultanthewise]

why we need to maintain the neutrality of the solution?

[lilangel0072]

it's needed so that the electrons can flow thus creating electricity. If the cathode solution becomes positively charged then this will exert a pull on the electrons preventing them from leaving through the wire, thus the electron flow stops.

so, no electricity.

[asadsaqib]

useful video

[Archidawg]

I'm a little slow. Do electrons circulate fully, passing through the cathode, into the salt bridge and into the anode? Or does it stop at the cathode?

Also is the galvanic cell the same as an electrochemical cell?

[chrismckeown0501]

the electrons do not circulate fully, once they reach the copper rod they bond with copper ions and become solid copper.

the galvanic cell is a type of electrochemical cell. there are also electrolytic cells, but they're a substance producer as opposed to a power producer. plenty more info avaialable on google

[lilangel0072]

the elctrons circulate through the wire...because electrons are being lost in the copper anode this pulls electrons from the wire which in turn pulls electrons from the zinc cathode...and so on..

[Archidawg]

OMFG why can't chemistry teachers use youtube!!!

[Bl00dFox]

thanks, very helpful!

[Drift2uner]

you saved my life!

[abhix555]

real nice animation. finally understood the galvanic cell. thanks a lot!

[armanpoghosyanashoti]

good luck to everybody who is taking the chemistry regents

[cephalus1221]

Very clear! Thanks!

[gellybelly2]

This is an awesome video.

[Kiwin999]

Thanks!

Great done.

[thrownover65]

Thanks for this. I have a presentation on galvanic cells and I didn't understand this till this video!

[unstoppable008]

Very nice video. I already know this, but its nice to see a good visual representation. I cant wait to get into AP Chem next year.

[ddd1600]

ah. enthusiasm. good good, nobody ever went far in chemistry without disproportionate amounts of enthusiasm. its the difference between memorization and understanding

[VBalian]

I might have misunderstood this but can someone please explain???

[unstoppable008]

The cathode is positive, the anode is negative.

The flow of e- can determine this. The electrons lost during oxidation move through the conductive wire and into the cathode. So negatives (in this case, the free electrons) are attracted to positives. If the free electrons are moving towards the cathode, then the cathode must be positive, and reversely, the anode must be negative.

You left this comment some time ago, but I thought I might as well still help.

[VBalian]

Shouldn't the anode be neutral at a given time?

[unstoppable008]

The (aq) solution of Zn+2 ion, must remain neutral, thus the salt bridge in-between, allowing other ions to migrate freely to balance the charge. When the Zn loses two electons, Zn+2 ion is released into the soution. To balance the new Zn+2 ions, 2 Cl- ions must be introduced, to balance the charge. The salt bridge allows this to happen, while at the same time balancing the cathodes charge as well. This happens until one of the metals is completely used up.

[Patfromhutto]

really? c'mon dude...

[unstoppable008]

What, I dont care...I like Chemistry, im not afraid to admit it.

[VBalian]

Great video, but I've been taught that the cathode is always negative and the anode positive. After watching this video, this statement doesn't make any sense! If the Zinc bar is losing both electrons and zinc ions how is it positive overall? Same with the copper cathode. Okay, it's accepting positive copper ions but how is it negative overall at a given time? Is it because all the electrons are flowing from the zinc to the copper? But then how is the zinc bar negative?

[HollanXD]

The zinc in the zinc bar will change into zinc ions(they go in the solution) and elektrones will come free. the anode becomes negative because now there are to many elektrones in it.

The anode can be positive too, but that's with Electrolysis. The anode is negative in a Galvanic cell.

[VBalian]

thanks

[CreateAMoon]

Cathode is defined as the site for reduction, and Anode is the site for oxidation. Knowing this will help.

[vanessab93]

thnx for this video!! im learning Galvanic cell - n i ddnt understand anything... now its alot clearer ;)

[fno512]

we use any salt to neutralize the solution

[Wgenai]

Very nice video helped me understand what actually goes on in the cell.

[hippieweirdo]

i love youtube, it helps me a lot wiht assignment cos i learn vicually and videos like this r very helpful

[SebAGITATED]

Its tricky to understand how this works without a visual demostratio like this

[ggabnore]

lol ez.

we use KNO3 for salt bridge tho

[divwak]

thanks A LOT for posting this

[firmkillernate]

Thank you so much! My AP test is on tuesday, and I was wondering what the hell a salt bridge was.

[sliderulex]

Outstanding galvanic cell demonstration! Well done.