It wasn't in my native language but still better than two blocks with my chemistry teacher...

Oh my, what a glorious lecture. Thank you so much. You’re changing the world to the better here, Khan Academy!

Ecell = Ered + Eox Or Ecell=Ered (cathode} - Ered(anode) Both equations are the same

@andyoohhh2061

3 жыл бұрын

How are these the same? The sign change would give you a different value. What am I missing?

@techyes4874

3 жыл бұрын

@@andyoohhh2061 without changing the sign it still is the same with the mentioned equation above: 0.34 V - (-0.76 V) = 1.10 V

@heIsNoMore

3 жыл бұрын

@@andyoohhh2061 concept

@priyanshsuthar519

3 жыл бұрын

Former will be more positive and latter be less negative.

well, you are becoming clear in concepts like sal used to do

Better than my professor

@simpleaverage9772

3 жыл бұрын

some of them are not even professors they are a waste of time and they should give up

Very precise terms used to describe the concepts here. Well done.

Excellent video! Thank you! Now one understands why batteries use lithium.

Brilliant explanation !

great videos, thank you!

excellent .....too helpful ....

If you're still having trouble understanding redox agents think of them as being counter current: Oxidizing agent -> is Reduced through causing the other to give up their electron. Reducing agent -> is oxidized through causing the other to gain the electron they gave up.

@TheAllBloods

7 жыл бұрын

OIL RIG! Oxidation Is Losing electrons, Reducing Is Gaining electrons.

@aizasaed170

7 жыл бұрын

Tim Dean crash course😉

Very well explained.

I LOVE THIS.

this very2 helped me in my STPM chemistry , thank you so much , may god bless you

@jerichoscott4819

7 жыл бұрын

S

Who is the lecturer? He is a fabulous teacher!

I love this chemistry lesson

My professor said the numbers should always be subtracted as the formula is reduction minus oxidation ... that numbers should be left as is with values regardless of if they are reduced or not. You just have to know where to put what and now I'm totally confused. Just looked over all his notes to make sure and it's written as this and in the book as well. :(

@YasminNotJasmin

7 жыл бұрын

mine said the same thing! I'm so confused, in my textbooks and on the internet every example shows reduction + oxidation but my lecturer said it's reduction - oxidation :/ and i have my exam soon

@rebecav100

7 жыл бұрын

You're both correct! The usual equation is Reduction - Oxidation, with the normal values from the table. The second equation (Reduction + Oxidation) is a result of FLIPPING the sign of your oxidation half reaction. For example, if your reaction involves Fe being reduced (E= -.44V) and Li being oxidized (E= -3.05V), then the first equation involves using the values directly from the table. So, it will look like this: (-0.44)-(-03.05)= 2.61V. The second equation involves flipping the sign of the oxidation value, because the chemical equation itself is flipped around. So, the second equation looks like this: (-0.44)+(+3.05)=2.61V. Both methods give you the same answer, it just depends on if you remember to change the sign for Eox.

@YasminNotJasmin

7 жыл бұрын

Rebeca Volosen thank you!!

@turkishemir5735

7 жыл бұрын

Rebeca Volosen You are my Hero!

@nedisawegoyogya

3 жыл бұрын

come here, for the same reason lol

Khan- The Savior

Thank you

This was helpfulllll a lot thank you!

@shaikrafiq9498

5 жыл бұрын

Will you please make a vedio on standard hydrogen electrode?

Good explanation................thank you for this video. Just one question regarding the reverse part, my lecture told us that whenever you reverse any half Redox reaction equation the sign remains the same, however when you reverse the oxidation half reaction for Zn you change the sign, so I'm really confused now, can you clarify that for me please???............Thank you

@ahmedhaleem6519

4 жыл бұрын

I know that you pby have graduated but imma explain one thing for everyone who might be triggered by what your prof said .. He is wrong, The reason is : How do you reverse an equation ? actually you just multiple the whole equation by (-1), the equation here means both the Reactants and the Products, AND ALSO the potential. So yes, whenever you reverse the half reaction equation you need to change the sign.

are there copper-lithium batteries??

Wow - this is so clear. my high school textbook took 3 pages to do this and managed to completely confuse me. Yep there are some pathetic authors out there and most of these are professors. Goes to show you, more academic = hopeless at teaching

Is SRP table made experimentally?

Like ur video

How to know that the product is favourable or not ?

why you add cathode and anode

the half equation higher up the standard potentials table must always be reversed and written as an oxidation. so I don't see why you wrote the copper as a reduction and the zinc equation as an oxidation

Why isn't there a standard oxidation potential table?

if you have to multiply one of the half reactions.. would you then multiply its' cell potential???

@transformersrepublic5878

5 жыл бұрын

No because the unit of E is Volts not Volts per mole

🙏🙏🙏

How does this relate to the octet-rule? I feel like there's a connection

@kimvangvideomarketerbangko3265

3 жыл бұрын

@Biochemistry Forever That wasn't sarcasm :p

The formula for calculation of Standard Reduction Potential give at 5.05 is wrong. All Chemistry textbooks I have counter checked this with shows that the correct formula as: e = e (+ve) - e(-ve). See for example Chang Raymond on page 844 (10th edition) uses the formula given above. Khan Academy, can you please comment?

@dejanhaskovic5204

6 жыл бұрын

Mwongera Mwarania Minus and minus give plus.

@DevPatel-nf5mp

6 жыл бұрын

It's same only

👍

the audio is quiet

Is it same as standard Electrode potential?

@vicneshwaranair1482

6 жыл бұрын

yeah

E=E°cathod-E°anod Can this work?

I love chemistry, do you?

everyone tell us whats your studying Im a chemistry major student year 3

@aizasaed170

7 жыл бұрын

Ahlam Moo mcat

@jake_riptide

6 жыл бұрын

Chem 12, got a test tomorrow

@AS-zr6iw

6 жыл бұрын

10 grade AP chem

@lyubomirgizdarski8191

6 жыл бұрын

Biochemistry

@user-ev5el3jo8f

6 жыл бұрын

I'm a student in pharmaceutical

Is that correct 2:43 to 2:50

Hi, I am a cambridge A level chemistry student!

@Vaishnavi-ot6br

5 жыл бұрын

I doubt it..

@hasbiyanousheen4432

5 жыл бұрын

Nasreen Hedayet so what