Redox titrations | Chemical reactions | AP Chemistry | Khan Academy

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A redox titration is a titration in which the analyte and titrant react through an oxidation-reduction reaction. As in acid-base titrations, the endpoint of a redox titration is often detected using an indicator. Potassium permanganate (KMnO₄) is a popular titrant because it serves as its own indicator in acidic solution. View more lessons or practice this subject at www.khanacademy.org/science/a...
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13 сен 2014

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Комментарии : 87

@user-kt6wv2pn6k 8 лет назад

That's amazing! I finally understand what we've done last half year on chemistry lessons, even if i am not a native speaker, the whole stuff is brilliantly explained!

@isharadinho2898 7 лет назад

thanks Khan Academy, i had a lot of problems understanding this topic, thanks to your video now i can.

@joni2417 4 года назад

I'm German and you explained it much better than my Chemics Teacher. Thank You

@TheRealQuickSilver 6 лет назад

Thank you so much! You just saved me from getting a C in AP chem this semester.

@mmstutorhuraira5672 Год назад

just WOW! LITERALLY CLEARED EACH CONCEPT IN 7 MINUTES

@sidrazeitouni5673 Год назад

Perfect amazing! I finally could understand the whole concept which is very useful since I am preparing for my exam… BIG THANK YOU!!

@zachstarattack7320 2 года назад

THANK YOU! I never get these labs as the other kids do them, now I see the light!

@Shreyaagrawal_1657 2 года назад

Khan academy is unmatchable!! Thankyou so much. You guys are lifesaver

@user-yo6dk6jh2b 2 года назад

이해가 잘되네요 감사합니다 시험 잘 볼게요♡

@HEAR_Instrumentals 5 лет назад

subbed, perfectly explained!

@adityashijikumar1131 Год назад

THANK YOU FOR EXPLAINING THE REDOX REACTION!

@arbindapandey1711 5 лет назад

Thank you Khan Academy!

@black_jack_meghav 2 года назад

Thanks khan academy! You guys are great!

@moritzroh9361 5 лет назад

1 day before my German oral chemistry exam for the abitur...(like a levels) Thank u!

@bulitoni 4 года назад

What's oral chemistry

@alexh5040 4 года назад

@@bulitoni oral exam in chemistry

@aneeghagunasena5217 6 лет назад

Can't thank this video enough😻

@janeemmanuel8885 6 лет назад

Aneegha Gunasena HI

@vsalukir7019 5 лет назад

I'm having a lot of problems with the way that formal charge seems to be used interchangeably with oxidation state. I'm trying to image the Lewis dot structures and the separation of charges in things like MnO4- and Cr(OH)4- that would allow for the given oxidation states, and I can't do it. This makes me feel like I couldn't solve these problems on my own. I mean how does Chromium give up electrons or charge to hydroxide ions that want to give up charge?

@tomatochemist 3 года назад

formal charge and oxidation state are not the same thing. They exchange electrons which affect their charge, but they aren’t exchanging charges

@bokuwatobi954 4 года назад

Brilliant!!

@user-rw5nr8co7c 2 месяца назад

Finally found a video that explains redox titration in detail

@grade7science310 Месяц назад

A good explanation . Thank u

@fakhrulnawawi9681 5 месяцев назад

Clearly explained, thanks

@emanbadry8642 Год назад

Thank you for this video

@kumarirashmi8293 6 лет назад

great mam

@nikhilpatel2442 4 года назад

Is It possible to titrate a colored solution such as Iron(III) Oxide?

@Bananakid11 7 лет назад

nice thanks

@shreyajain5814 6 лет назад

thanks!

@dibb1e374 3 года назад

Epic Dr. Skipper

@bilalkadri8851 3 года назад

Isn't Fe3+ brown in colour, so it won't form a colourless solution ?

@johanan9987 8 лет назад

helpful and handsome!

@chenyijia8836 5 лет назад

Why is the final solution colourless? Isn't Mn2+ pale pink and Fe3+ yellow?

@veronicawicker5273 8 лет назад

How do you know that you havn't run out of H+ instead of Fe^2+? How would you know how much acid(H+) to add if the concentration of Fe^2+ is unknown?

@gonzaloayalaibarre 7 лет назад

I guess an answer isn't of use to you anymore, but I guess someone else can read this. This reaction is supposed to happen in very acidic mediums (high H+ concentrations, low pH) in which the Mn+7 will accept 5 electrons and be reduced into Mn+2. The Mn+7 can be reduced to +2;+3;+4;+6 at different pHs.

@veronicawicker5273 7 лет назад

Thanks. I'm not in chemistry this semester but I will be taking organic chemistry next semester. This reminded me that I need to review chemistry2 before then.

@spookywizard4980 6 лет назад

if in doubt add some acid and see if the color persists

@enasabuelqmpoz749 6 лет назад

very thank

@rakshithamrakshitham1627 3 года назад

How to calculate Ecell for 0 ml addition of titrant??

@amiramostafa7335 6 лет назад

please I need some help how can I compar between potassium permenganate and ceric ions as standard??

@varlam1568 5 лет назад

It's double standard

@opslol957 3 года назад

@@varlam1568 2 years to late

@varlam1568 3 года назад

@@opslol957 time is relative

@sameeragrawal2897 3 года назад

@@varlam1568 lol

@mayaaljundi5279 2 года назад

can we know how many grams (m) of Fe +2 were needed for the titration?

@satyamraj5570 2 года назад

Yes you can just use, Mole= Constituent weight/Molecular weight of that Constituent

@rowenaabbie995 6 лет назад

thanks this really help

@johnprice8458 3 года назад

Iron (lll) which is a product is pale yellow and not colourless, even in dilute concentration!

@topnup3288 3 года назад

Plss add more volume

@rxa4_tm 2 года назад

I'm waching this 30 minutes before the test

@xbbyhunny 6 лет назад

when i tried the mv=mv equation, my answer came out as 0.05M Fe x 5 moles = 0.05M of Fe why didnt it come out as 0.2M

@vsalukir7019 5 лет назад

Okay, let's try this using the MV method. For the KMnO4 it would be .020 M x .020 L = .01 L x X M. Solving for X we get .04 M. But then you have to consider that a molar quantity of MnO4 can react 5 times as much Fe, so you need to multiply the MV answer by 5. And 5 x .04 M = 0.20 M.

@victoriagong2620 7 лет назад

How in the world is that permanganate molarity so precise?

@avishrohil929 4 года назад

I'm confused. How does KMnO4 become MnO4 in the reaction

@walterwhite4699 4 года назад

MnO4-is the ion

@andrewhan2894 4 года назад

@@walterwhite4699 K is a neutral ion, so really it's just MnO4.

@nowwhatdana373 4 года назад

The potassium is considered a spectator ion...it does not impact the reaction and is not included when the reaction is written this way. The same goes for the HSO4- which contributes hydrogen ions. It was sulfuric acid (H2SO4) before, but the HSO4- part of the compound is only a spectator ion.

@avishrohil929 4 года назад

@@nowwhatdana373 thankss

@tiagomarques9153 4 года назад

Why can't you cancel the fives of the irons if they're on both sides?

@Misha-iw6kd 4 года назад

Because they are two different ions. On the left he has Fe 2+ and on the right he has Fe 3+

@tiagomarques9153 4 года назад

Misha but why does he have the fives in the first place?

@sumairasardar8666 7 лет назад

Isn't this guy the same one that makes math videos. He speaks exactly the same

@Ongneko 2 года назад

Niceeee

@user-hn4bm9hc2i Год назад

❤❤❤

@rkjstuff7402 6 лет назад

Improve sound pls

@janeemmanuel8885 6 лет назад

rkj stuff hi

@dr.rupeshkushwah 5 лет назад

redox titration(full hd)/must watch n subscribe ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE--d_E5hfGqWw.html

@champagnemoneyabuelo 6 лет назад

why didn't we mention potassium when writing the equation?

@zack150 6 лет назад

ahmd1221 net ionic equation

@kingcuber7796 5 лет назад

@@zack150 ahhhhh, now i get it !!

@NikRakiqta Год назад

For the concertrarion can't we use the formula C1 x V1 = C2 x V2 C1 - conc. of Fe solution V1 - volume of Fe solution C2 - conc. of MnO4 solution V2 - volume of MnO4 solution So we can solve for C1

@samantharubinstein2699 11 месяцев назад

Thats the dilution formula, but there is a similar titration formula ; CaVa/a=CbVb/b, where a and b are the stoichiometric ratio of the reactants, so you could do CaVa/a=CbVb/b where Ca- conc. of Fe solution Va-- volume of Fe solution a=5 Cb- conc. of MnO4 solution Vb- volume of MnO4 solution b=1 Hope this helps!