Electrochemistry

[@lovapumpkina8961]

Thank you Professor Dave! Our professor "forgets" to explain a lot of the basic concepts for a chapter, leaving us confused when she goes on to more complex parts of the chapter. Your videos are brief enough for me to watch them before lecture so I can understand and visualize basic concepts.

[@yusufbrecken3007]

I guess it's quite randomly asking but does anybody know a good site to stream newly released movies online?

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[@shreyaskarthik2185]

idk how you do it , but you make even the most complicated looking things so simple ... cant thank you enough

[@anwardhama8873]

Your are awesome, I am using this to reinforce MCAT material. Your videos are straight to the point, no fluff. I commend you good sir.

[@ivoryas1696]

Anwar Dhama Nice; hope you did well!

[@santhikadimisetty2950]

What i struggled to learn so much time u taught it in less than 5 mins. Truly AMAZING Thank you so much professor dave

[@NdizaMbambara]

When this video was posted I was in the 9th grade,and now I’m in first year med school…and it’s helped me SO much!! Just want to thank you! Med school so far hasn’t been easy lol,but these videos are making it a whole lot better!!

[@KSUBSCRIBERINYEARCHALLENGE]

Thanks professor you will never now how much you helped me through your short videos

[@SKgyebaek]

These videos are great when i need to refresh my memory about a-level chemistry during uni

[@olliesweirdworld]

i don't understand this at all

[@Js4ng]

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[@OmniversalInsect]

You need to learn more basic concepts.

[@amiralziadna4143]

So I need to leave some more basic concepts

[@BabaAbomah]

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[@divyajhugaroo2256]

Left oxidise anode negatively=LOAN.. simply easy to distinguish the anode.

[@KSUBSCRIBERINYEARCHALLENGE]

wow tnx i never expected such creative and brilliant comment

[@mirimichaely1177]

Electrons flow from low electric potential to high; the opposite of what you said @ 2:50. conventional current will flow from high to low voltage

[@TravelingTreats]

Professor Dave is this accurate? I need help with electrochemistry and to study for my chem 2 final?

[@totallynotcozmo510]

Amen to you Chemistry Jesus

[@sirijanthakur]

so helpful man, this chapter is filled with direct words, had missed a few definations leading to confusion, really you made it so much clearer and easier : ) thank you !

[@tummalasatya8093]

Tq very much dave sir my aim is to become scientist ur videos r soo clear for me

[@maryamsheikh1387]

thank youuu!

[@coastalflourishing]

For the Ecell, why didn't you change the sign of the anode to positive 1.66. The chart shows negative 1.66 for Al3+ to Al(s) which is the reverse of the anode in the problem at the end. So wouldn't you flip the sign since the reaction is flipped?

[@annamauroam]

Do you know basic math?

[@fevensolomon8216]

Thank you professor Dave

[@saminacademy]

A real chemist... Sir you are great your lecture have no confusion.

[@vaisakh3462]

Best revision material ever

[@christandme1372]

omg I finally understand😄Thanks!

[@pravinjr10]

sir in electrolytic cells we consider anode as positive and here we dont. is there any reason for that?

[@ProfessorDaveExplains]

in electrolytic cells a current is used to drive an otherwise nonspontaneous reaction, whereas in a voltaic cell a spontaneous redox reaction is used to generate a current, so it's the reverse situation in terms of electron flow

[@pravinjr10]

well explained tq

[@OT4__FLOWER]

The intro makes me watch the whole vid...❤

[@collageboyritvik]

Thankyou for your great explanation in short time

[@delina_rim8640]

Professor Dave, I thank God for your existence.. I gain lots of knowledge from your videos~~

[@danillomoura1066]

Excellent teacher!

[@do.notdisturb]

Would like to see you cover cyclic voltammetry and chronoamperometry

[@nirmalmishra6404]

Dave, isn't that the electrons flow from areas of low electric potential to high electric potential?(you've mistakenly said the reverse)

[@user-vp1dh6ly5d]

Thank you professor ❤❤

[@mariamhasany5250]

I cannot thank you enough Prof. Dave! like you are a lifesaver!!!

[@lucialukas4470]

Thank you professor ... your videos are very helpful

[@aman_raj2926]

Can you explain about Standard Oxidation Potential and Standard Reduction Potential??

[@ProfessorDaveExplains]

that's in this clip you're commenting on.

[@aman_raj2926]

Professor Dave Explains thanks

[@1ksubswith0videoschallange51]

When you support someone From start and then you on this stage really feeling proud of you bro❤️💓

[@aniketkamble8997]

U look twin of ranbir kapoor the Bollywood actor

[@abhisheksahuuu]

No he looks like professor Jesus Jr. ;)

[@hsimon9364]

greetings professor! i kinda wonder why the electrons lost by zinc dont go to the bridge first? how could they make a choice? thx alot

[@kimbyunxx5008]

is it constant for cathode to be on product side and anode on the reactant side?

[@lauren9004]

Thank you!

[@tharu2360]

So if you flip the sign of the reduction potential you get the oxidizing potential for a reaction?

[@samrashafaq1717]

Yup

[@jeanlucas2834]

The Nerd's Equation 🤣🤣

[@pondererofpointlessdreams5029]

how does professor dave teach me a topic in 5 minutes better than my teacher does in 5 days of 45 minute lessons

[@jordangreaves1525]

great help

[@merlinsmustche]

1:30 are the plus and minus signs above the electrodes the wrong way around? Cathode is negative and anode is positive

[@ProfessorDaveExplains]

No, other way. The video is right.

[@serialkira5819]

Thank you J

[@zzHackedTutorialzz]

Don't negative charges flow from a low to a high potentials and positive charges the other way around?

[@ProfessorDaveExplains]

yes!

[@zzHackedTutorialzz]

How come at 2:50 you say that electrons flow from a high to low potential?

[@ProfessorDaveExplains]

yikes, perhaps i meant energy instead of potential, i'll look into it

[@a.sumido]

Thank you so much!!!

[@prernabajaj4667]

Please help with electrochemical series !

[@faizanshahsyed1131]

why zinc atom ionize in its solution

[@ProfessorDaveExplains]

it doesn't, the atoms in the electrode ionize, and then the ions enter solution.

[@AkhilNairjedi18]

Could you explain how you got that Ecell? Isn't Fe +0.77?

[@ProfessorDaveExplains]

nope, it's -0.44! look it up.

[@AkhilNairjedi18]

Oh sorry, I was looking at Fe3+ instead of Fe2+ in your list.

[@rassimsimou1594]

Good

[@ahappyimago]

I love you dave. No homo!

[@pranavchhajer6337]

This man actually makes me wanna learn chemistry and not just mug it up :p

[@HassanRaza-ov5eq]

Thanks Sir

[@aasthaaggarwal348]

Sir can you please make a video on polarography technique-introduction, polarographic cell, polarogram, working of polarographic cell, Dropping mercury electrode, supporting electrolyte, role of supporting electrolyte and on cyclic voltametry technique

[@yaminaboub-jo2lb]

If you fail your test after watching this , you should know that the problem is with you , not with the subject , myself included hahaha , it can't get any simpler .

[@sohamkumar9518]

honey singh and professor dave 2 youtube channels I visit even if they are 7 year old

[@cugzarui5568]

i literally gave up studying for the day and decided to watch your videos to maybe get a bit of education, but then while watching i felt like instead of tiring out from studying i instead have to start writing stuff down as it all made sense without effort.

[@rajithacharla8435]

great sir

[@InasiciidHamze]

More discription

[@ajoykumardutta7392]

its nice to watch

[@silshavs1861]

incredible

[@blblbl2178]

Thanks :)

[@bangtanarmy7wonders165]

Thanku

[@aminakhalid2197]

Why the charge on anode is negative

[@ProfessorDaveExplains]

Because that's where oxidation takes place.

[@MasterTuttoo]

i fucking love u dog, short and sweet

[@mister-accomplished]

Sir help me in finding Ur more videos about electrochemistry

[@stoneshaver5535]

thanks man 100% incoming

[@retajalmalkialmalki4254]

anode is + and cathode is - not the other way round

[@ProfessorDaveExplains]

This video is correct.

[@MVC670]

Professor Dave is correct - for galvanic cells. I'll bet, though, that you are dealing with electrolytic cells. An anode is where oxidation occurs. It's mind-frying because if you want to induce oxidation at the electrode -say oxidize the electrode itself from metal to ions in solution, the basis for electropolishing - you hook up the *positive* terminal of the power supply to the electrode. Positive sucks out electrons from anything at the electrode surface Conversely, to drive reduction (reduction = cathode) such as electroplating, you hook up the negative terminal to the electrode you want to plate. Negative feeds electrons to anything at the electrode surface, such as metal ions you want to reduce and plate on the surface. I once knew a guy doing stress corrosion cracking studies on stainless steels. He told me that he set up electrochemical test cells by going through the thermodynamics and the equations, then hooking it up exactly the opposite. It never failed him.

[@SachiN-Vishwakarm]

thanku sir........superrrrb explaination😍😍😍😍😍

[@alexandery8508]

Ugh why did I thought that kathod is - and anode is +?

[@raycalle3241]

It is, just not for voltaic cells. That is because the flow of current is reversed

[@swavnasahoo711]

Straight stuff.

[@rk__singh]

Which book is best for chemistry and math for class 12

[@atharvbhagwat9137]

all in one for maths and NCERT textbook for Chemistry

[@aliatruman]

yes

[@plamenferdinandov5083]

How is it so that near the anode oxidation takes place? Anode is positive (I don't know why but it is positive right?). So it must attract anions. And what do anions do? They accept protons. Which is equal to reduction. I can't get it please. Teachers in Bulgaria are horrible at explaining even these simple stuff and all they do is confuse students. Help

[@ProfessorDaveExplains]

No no, at the anode neutral atoms are oxidized. The electrons move through the wire to the cathode.

[@moseskargbo5617]

The final answer is -1.22

[@ciencias3344]

This does not explain an ice tray battery right?

[@soumyaneelmanna3097]

I am 27 and I still don't understand oxidation and reduction. It is so confusing

[@ajv2d]

good cap Dave

[@aniketbiswas9885]

anode is + and cathode is -...

[@ProfessorDaveExplains]

not for a galvanic cell! perhaps you're thinking of an electrolytic cell.

[@krapsenhelb180]

That's on electrolytic, on volatic cell we got the opposite

[@samiramammadova4942]

great

[@jjdh911dexter9]

For the Ecell, why didn't you change the sign of the anode to positive 1.66. The chart shows negative 1.66 for Al3+ to Al(s) which is the reverse of the anode in the problem at the end. So wouldn't you flip the sign since the reaction is flipped? pls answer ty

[@ProfessorDaveExplains]

we don't manipulate the reduction potentials when calculating Ecell, we just plug them in directly

[@carinaeizmendi1111]

I agree with jjdh911 dexter that it's easier to just think "I SUM the energies of the proper half reactions" and then flip the reduction half reaction as needed then try to remember which one to subtract. It's not manipulation; I was taught to do it that way. I try to avoid memorizing whenever possible!

[@dhruvkataria2159]

DaaaavvvVVVVeeEEEEE !!!!!!!!!!!!!!! BRO!!!!!!!!

[@pongsss28]

Thank you chemistry Jesus

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M

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Super 👌👌👌👌👍teaching

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thank you science jesus

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Lee

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yeah buddy

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i love ur videos baby

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U r grt 😎

[@ArwaMohamad213]

👍🏻👍🏻👍🏻👍🏻👍🏻

[@anorderedhole2197]

I am a salt bridge without an voltaic cell.

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Sir you look like Indian bollybood actor ranveer capooor

[@Standforthetruth18]

I scanned the QR code in my book and reached here

[@lazsa3433]

Chat r we cooked

[@brody.broderick]

i’m cooked

[@sqweem1016]

am i the only one who is not fully understanding the exact details of the whole subject

[@tagadasir]

जब भी Motivation कम होने लगें तब अपने माता पिता कि तरफ देखकर पढनें लगना क्यों कि उनकी खुशी हम सब हैं और हमारी खुशी हमारे माता पिता हैं ✍️✍️✍️......

[@eslammohammed4855]

Thanks i don't understand any thing 😢😂💔