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.
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!!
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 !
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.
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?
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 .
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
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
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.
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
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
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!
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.
I guess it's quite randomly asking but does anybody know a good site to stream newly released movies online?
@@yusufbrecken3007 😂😂😂
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idk how you do it , but you make even the most complicated looking things so simple ... cant thank you enough
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!!
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.
Anwar Dhama
Nice; hope you did well!
What i struggled to learn so much time u taught it in less than 5 mins. Truly AMAZING Thank you so much professor dave
Thanks professor you will never now how much you helped me through your short videos
These videos are great when i need to refresh my memory about a-level chemistry during uni
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 !
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
Professor Dave is this accurate?
I need help with electrochemistry and to study for my chem 2 final?
Amen to you Chemistry Jesus
Left oxidise anode negatively=LOAN.. simply easy to distinguish the anode.
wow tnx i never expected such creative and brilliant comment
The intro makes me watch the whole vid...❤
i don't understand this at all
Skibidi toilet rizz
@@Js4ngon god
You need to learn more basic concepts.
So I need to leave some more basic concepts
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Best revision material ever
A real chemist... Sir you are great your lecture have no confusion.
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.
how does professor dave teach me a topic in 5 minutes better than my teacher does in 5 days of 45 minute lessons
Tq very much dave sir my aim is to become scientist ur videos r soo clear for me
I cannot thank you enough Prof. Dave! like you are a lifesaver!!!
This man actually makes me wanna learn chemistry and not just mug it up :p
Professor Dave,
I thank God for your existence.. I gain lots of knowledge from your videos~~
Thank you professor Dave
thank youuu!
Thankyou for your great explanation in short time
Excellent teacher!
honey singh and professor dave 2 youtube channels I visit even if they are 7 year old
omg I finally understand😄Thanks!
Thank you professor ... your videos are very helpful
Would like to see you cover cyclic voltammetry and chronoamperometry
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?
Do you know basic math?
Thanks professor Dave you really help me i understand
Thank you professor ❤❤
Thank you J
Don't negative charges flow from a low to a high potentials and positive charges the other way around?
yes!
How come at 2:50 you say that electrons flow from a high to low potential?
yikes, perhaps i meant energy instead of potential, i'll look into it
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 .
U look twin of ranbir kapoor the Bollywood actor
No he looks like professor Jesus Jr. ;)
Thank you!
Dave, isn't that the electrons flow from areas of low electric potential to high electric potential?(you've mistakenly said the reverse)
The final answer is -1.22
great help
thanks man 100% incoming
Thanks Sir
sir in electrolytic cells we consider anode as positive and here we dont. is there any reason for that?
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
well explained tq
Can you explain about Standard Oxidation Potential and Standard Reduction Potential??
that's in this clip you're commenting on.
Professor Dave Explains thanks
Good
hello professor dave i have a doubt: cu^2 and zn^2 are same +2 right so both are oxidation . if cu^-2 is there then its called reduction right
Thank you so much!!!
good cap Dave
The Nerd's Equation 🤣🤣
i’m cooked
its nice to watch
Please help with electrochemical series !
Chat r we cooked
thanku sir........superrrrb explaination😍😍😍😍😍
Thanku
This does not explain an ice tray battery right?
Thanks :)
So if you flip the sign of the reduction potential you get the oxidizing potential for a reaction?
Yup
great sir
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
I scanned the QR code in my book and reached here
Straight stuff.
Can't take the hair and the beard and the IDGAS shirt.
incredible
anode is + and cathode is - not the other way round
This video is correct.
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.
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
I love you dave. No homo!
More discription
i fucking love u dog, short and sweet
I am 27 and I still don't understand oxidation and reduction. It is so confusing
I am a salt bridge without an voltaic cell.
yeah buddy
Could you explain how you got that Ecell? Isn't Fe +0.77?
nope, it's -0.44! look it up.
Oh sorry, I was looking at Fe3+ instead of Fe2+ in your list.
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
No no, at the anode neutral atoms are oxidized. The electrons move through the wire to the cathode.
anode is + and cathode is -...
not for a galvanic cell! perhaps you're thinking of an electrolytic cell.
That's on electrolytic, on volatic cell we got the opposite
is it constant for cathode to be on product side and anode on the reactant side?
Ugh why did I thought that kathod is - and anode is +?
It is, just not for voltaic cells. That is because the flow of current is reversed
thank you science jesus
How come he tell all topics simply like nothing in such a lsss amount of time?
why zinc atom ionize in its solution
it doesn't, the atoms in the electrode ionize, and then the ions enter solution.
1:30 are the plus and minus signs above the electrodes the wrong way around? Cathode is negative and anode is positive
No, other way. The video is right.
Why the charge on anode is negative
Because that's where oxidation takes place.
Which book is best for chemistry and math for class 12
all in one for maths and NCERT textbook for Chemistry
yes
great
Lee
DaaaavvvVVVVeeEEEEE !!!!!!!!!!!!!!! BRO!!!!!!!!
Sir help me in finding Ur more videos about electrochemistry
Thank you chemistry Jesus
am i the only one who is not fully understanding the exact details of the whole subject
U r grt 😎
i love ur videos baby
Super 👌👌👌👌👍teaching
Ranbir kapoor??
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 ✍️✍️✍️......
M
Sir you look like Indian bollybood actor ranveer capooor
👍🏻👍🏻👍🏻👍🏻👍🏻
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
we don't manipulate the reduction potentials when calculating Ecell, we just plug them in directly
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!
Thanks i don't understand any thing 😢😂💔
When you support someone From start and then you on this stage really feeling proud of you bro❤️💓