Titration (using phenolphthalein)

[@scidemos]

You're welcome! ...Finally, someone who actually reads the comments to realise it was an approximate method simply to show what a titration is and not to point out to me the same thing many people before them have written! :)

[@naomielfalan5747]

this was EXTREMELY helpful! I'm doing this same exact experiment in my chemistry lab this week and i had no idea what my lab manual is telling me to do, so this helped a lot, thank you!

[@chartchasers1]

Only watching this in 2021…bless up, i enjoyed watching this so much and the music just does it for me.

[@scidemos]

@Ariel Patterson Vol of NaOH: 25.4 cm3 (ml) = 0.0254 dm3 (litres) #moles NaOH = conc x vol = 0.1 x 0.0254 = 0.00254 This is a 1:1 ratio of moles, NaOH:HCl so 0.00254 is used for #moles HCl Conc HCl = #moles ÷ volume = 0.00254 ÷ 0.025 = 0.1016 M *I know the experiment would need to be repeated so that the concentration of NaOH is found more accurately but based on this experiment here is the calculation.

[@livelife1823]

+Science Xperiments | sXp I love you

[@scidemos]

+live life aww, you'll make me blush ;)

[@sunitakumari-sr2gf]

Science Xperiments | sXp thank you for the calculation it really helped alot

[@anonymousjoe291]

Man science Xperiments is savage!!!😂😂 but thanks for the help. You have my appreciation

[@bestnoobs4ever464]

Really nice vid it helped me so much for my lab report I really appreciate the time and effort put into this ,man, you saved me ;)

[@thekurdishgirl6538]

Now l'm 12th grade student studying Titration , Tomorow l have Chimistry Exam , this video was helpfull to understand that , Thanks

[@arctiem]

Thank you so much bro! I have my chem practical tomorrow and you helped me out a lot!

[@Indiantubeer]

Rahul Gupta mine is today🙂🙂

[@daniyalhussain4909]

Mine is today

[@JohanLiebert47]

Same lol

[@valanali376]

Tomorrow 👍🏻

[@NileshKumar-sq1eb]

I have tomorrow

[@harkritjassal8335]

very helpful !! i have my exam tommorow, wouldnt be passing without this video thanks loads!!!

[@kastro4460]

Thank you so much! We made this on our chemistry class but i didn't understand it well, now i do. Thanks again ;) (P.d: i don't know why the people complain about the music, i think it's ok :v)

[@jyotisharma9451]

Kastro44 Jyoti

[@scidemos]

It's by my favourite guitar player, Joe Satriani. The song is called 'A piece of liquid'.

[@isteaqahmed957]

i was about to sleep with the tune of the music but nice project !!!! :)

[@Cafe11A]

Yesss!!

[@mariamhashim9283]

Lol

[@LaXayGaming]

😂😂

[@vinylxr7]

🤣🤣

[@mwilamike4496]

Thank you for helping us with my brother,now every thing is perfect....

[@scidemos]

@fizzy2o11 The video was intended as an intro/overview as to what a titration is so it isn't too accurate. Glad it jogged your memory :)

[@shivshankarchaudhary9644]

This experiment clarify more clearly that a lecture.

[@scidemos]

You are correct about alkalis and this has been addressed in previous comments. Either way is fine for a titration though as it depends on which one (the acid or the alkali) is the unknown concentration. This decides which one goes into the burette.

[@icetouch77]

you dropped the base too hard

[@scidemos]

That's what it's all about! No room for treble ;)

[@shabanamoona3231]

Lmfao

[@snekthesilverboi]

You made my day :)

[@ravikumawat7006]

Its should pale pink not dark pink so its wrong experiment

[@bharwabhindi3786]

😂

[@starlight0208]

wow, very good video!! I can't tell you how often i have done titrations and as i'm adding the base to the acid, i going 'Yep, nope, Yep, nope, Yep, nope' my teachers all laugh at me when i go.....lol :)

[@scidemos]

@Anonymous2094 The technician I filmed dropped alkali into the flask (containing acid and phenolphthalein indicator). When the alkali drop made contact with the indicator in the flask it caused the indicator to turn pink in response to the alkali hitting it...but once the alkali that was dropped into the flask spread through the rest of the liquid, it made the initial drop of alkali a lower pH (because it was mixing with the acid already in the flask) and so the pink colour turned to colourless.

[@ssr4181]

thanks! tomorrow is my Titration experiment :)

[@ammarfaruqui6258]

Fire Man same here

[@scidemos]

Glad the video was helpful! Joe Satriani is a great guitarist and musician - glad you liked the music too :)

[@ignited_beast8113]

8 years ago.....woah

[@Local0p1]

@@ignited_beast8113 ikr damn...

[@wariric]

To just add to the comment that you agreed to, that the acid should go into the burette. The reason my Chemistry teacher gave 35 years ago was that the caustic soda damages the ground glass surfaces of the tap and so it will eventually seize up, making the burette useless.

[@abhilashsbharadwaj8630]

Thank you sir because of you I got good marks in titration 🙏🙏🙏

[@AddHazers]

Oh man, Satriani's the best, isnt he? I love Pat Metheny too, and i am supposed to a titration lab soon in my chem class. Thanks for posting this, it gives me a pre-knowledge now of what's gonna happen :D

[@jrmora71]

Thank you for a great video! I just showed it to my 12 y/o daughter as an example of things that might look like 'magic', but that have a perfect scientific explanation. Nice to see people like you trying to educate our World, especially when we are bombarded with so much BS (including religions in general).

[@scidemos]

You're correct - I've replied to several comments mentioning this and it's been added to the video description...reading before posting FTW ;)

[@scidemos]

@d3sire100 You are correct about the less-than-accurate drops! This video was made as a quick guide for one of my classes about what a titration is and it wasn't meant to be an exact representation since that would have taken longer and I wanted to get to the end point faster so they could see what happens. I explained to them that it would need to be done more accurately if they were ever to do one themselves. The shade of pink of the phenolphthalein indicator is fine in this experiment.

[@samadritatalapatra8475]

Thanks a lot. Hv my exams tomorrow. Will be of a gr8 help

[@scidemos]

@Anonymous2094 Phenolphthalein indicator is colourless in acid and pink in alkali (between pH 8.3 to 10)

[@amirali-cw1ky]

thank u so much for conceiving such a wise concept of titration.

[@scidemos]

@browngurl185 Phenolphthalein is colorless in acidic solution and turns pink in alkali. The way I did it was to put the acid in the conical flask (and so the phenolphthalein was colourless) and add alkali from the burette which would start to give the pink colour. You mentioned acid twice but if you got the opposite colours with the indicator then you must have had the alkali in the flask and added acid from the burette. You can do it either way around.

[@jeanbooysen3845]

Great video as a quick guide. Exactly what I needed. Thanks.

[@scidemos]

@paparaziandadnan It is not wrong. Putting either acid or alkali in the burette is a valid method. In fact, when using phenolphthalein as the indicator, it is easier to see spots of pink appearing in the colourless liquid than trying to see spots of colourless within the pink liquid as you suggest. Using an indicator other than phenolphthalein can help with this issue though.

[@nirujaanton494]

it's very useful to every science students.thanxx sir

[@ashishdange3988]

Hi

[@ashishdange3988]

Nice one

[@brainygirlsossy]

This one is correct. we had the same experiment. as you are adding naoh, the color changes to pink.. and changing to pink means that its already at its end point.

[@ritenchaudhari397]

Thank You man I seriously needed that

[@sciencethink]

Hey, why don't you upload videos ?? It's been years you haven't uploaded . You have good content and better views . 😊

[@UmuhireOdette]

Thank u very much now I understand titration

[@samcrossley173]

Hi, why didnt u use universal indicator or methyl orange? what made u pick phenolphthalein? cheers

[@elenalouis311]

Really helpful! I have a test tomorrow ab this and you do help a lot. Hope I will do it as half well as you do! ^^

[@scidemos]

@JenkinsonTarron You weren't to know of course but this video was aimed at my GCSE class (not A level) and just needed to give an overview of what a titration is. It wasn't intended for the students to accurately replicate a titration themselves. So don't be sad, I'm sure there are plently of titration videos on KZbin that contain the required accuracy you desire :)

[@kirankumarp9103]

Tnqs very much,,, for this video because I not attend the post chemistry lab of titration,,, by this video u r helped me

[@mansipuri6437]

now i am ready to perform my experiment 😊😇 thank u 😇😇😇😇

[@AB6media]

@Vaidh Saurav me also bsc student 1 st year ...

[@malv4935]

Thanks! Lovely video and lovely background music :D

[@scidemos]

Thank you for the positive comment :)

[@Yusufk84]

we did this experiment in class but I did not understand a thing about how this worked. TYY

[@juniormasiya3706]

I don't think the solution was titrated at " 25.5cm^3 , if you watch closely after the last drop the solution appears to be losing colour , i am sure he had swirled it once more the pink would have totally disappeared. But I understand that this is meant as a demonstration not for precision.

[@scidemos]

@nalatwad Yes, that way is fine too, you just had it the opposite way around from my video. You had the acid in the burette and the alkali in the flask instead.

[@producedby_jett]

This vid definitely helped but can I know the song name of this also?

[@myvideosfortheworld6122]

Thanks A Lot ....... Nice Demonstration ! You Rock !

[@scidemos]

🤘🏼

[@SuperAbdu2010]

Science Xperiments | sXp I have my AS level chemistry ISA experiment tomorrow,do i use the 2 concordant results to get the average titre,or do i add up all of the titre's and divide by 'n'?

[@scidemos]

@MrTon43 Yes it is slow doing it this way but it's generally the way it's done in schools.

[@Reaperdoctor]

@paparaziandadnan Plus, it depends on which solution you are trying to calculate the concentration of. You always put the unknown conc. solution in the conical flask, and the known in the burette. This comes from a starting AS level student, so I think this is right. :)

[@wingbull2009]

[ guitar music intensifies ] [ demonstrator grows visibly more irritated ]

[@pareekshitvaid4605]

why time lag between two titrations in NaOH -vinegar titration should be less?

[@beatbusters2914]

What is the alternative for phenolphthalien indicator...?

[@yuanhuilee3082]

Lol i thought we're supposed to put the acid into the burette, the base in the conical flask? Or are they the same

[@alalalvita1863]

thanks for the video, this helps me a lot.I'm going to have this experiment today and i dont need to worry anymore cause i've seen this video hehehe

[@a.x1840]

If the solution colorless .. This mean it is base ? And pink mean acid ?

[@idtelc3308]

Hi. I am currently working with a Professor from the Nanyang Technological University, Singapore and we would like to use this video as part of his video lecture. Would it be possible to write in for permission to use this? We will remove the music so as not to infringe copyright.

[@scidemos]

Thank you for asking for permission to use the video. Feel free to use it for the lecture. There's no need to write in, your comment is enough. I'm glad my video will be of help to you :)

[@shadabali4940]

Thank you sir tomorrow is my practical and colour is pale pink

[@ashrafa.swarieh1604]

V. Nice vedio. Would I use the vedio as an educational tool for my students.

[@rababshami9567]

How we add Naoh from the buret ? After each drop we should close the buret or how?

[@itsthandok]

Thank you soo much, this helped me understand a whole lot better!

[@udumodlamini2125]

Hi, I am confused. Don't you use Phenolphtalein when you are titrating a weak acid and strong base because they neutralise each other at a pN above 7 and Phenolphtalein colour changes at a pH of 8.3 - 10

[@mattmarkarian8820]

Everything about this video was awesome. Except the music was a little too much during the guitar solo. But still, awesome video. I showed it to my AP Chem class. :-D

[@azharmehmood2227]

Please explain it why pink color disappear

[@PyroDoesMoreMC]

If you're ever to remake this video I would suggest using a steady cam, the shakiness of the camera gave me and others motion sickness at some points, and perhaps skipping over or speeding up part of the section where NaOH was added, as it gets very slow and wastes some time on an example video

[@sammrayounas2681]

Which solution take in burette or which take in titration flask???

[@Driffoid]

When the pink doesn't disappear that means you have created a BASIC solution. You passed the end point. Also the pink is too deep a colour.

[@scidemos]

Driffoid Yep, that's correct and I've stated about the lack of accuracy in the video description which you must have missed.

[@Berghiker]

So what was the concentration of the acid? 37%, 20%, 15%???

[@henriqueclarke754]

I want to know what the initial burette reading was

[@exploreanything20yearsago95]

Sir, how much drops of phenophthelin we should mix with NaOH

[@moinrawani8447]

i have my practical exam tomorrow , this video helped me revising the practical .thnks gr8 job . do u also make videos of phy experiments ? :)

[@scidemos]

I hope you did okay on your test :)

[@vsatishkumar4900]

Going to write it today

[@Anonymous2094]

Excuse me, would you explain why the color pink is obvious at the beginning of dropping but then by shaking the flask it disappears?? I mean why does it take to shake the flask few times before the pink color remains??

[@scidemos]

@whizzkid11k True, but it helps to have the alkali in the burette if it has the known concentration and the acid is the unknown concentration.

[@Taareshcool10]

very helpful indeed........n i lovd the music aswel.....thnx buddy.....

[@mmeste5218]

song goes hard at 2x speed

[@youshaahmed88]

Bruh I was here to study not vibe 😆😂

[@whizzkid11k]

@scidemos You're going to erode the burette quicker if you have the alkali solution in the burette instead of the flask though. Alkali and glass don't mix and it's cheaper to replace a flask.

[@judyopondo7454]

Was the pink supposed to turn a Base

[@sarthakkeshari3807]

Heyy i want to ask that where to use oxalic acid and phenolpthalein

[@LJ-ml7oz]

are there any tips to differentiate the "imaginary pink" color from the clear color (cuz i cant really tell until i put 1 drop too many)?or you will just have to tell by experience

[@indrasai5411]

Is it change its color after neutralization also?

[@aifootballhubb]

How many of you came for your practical examination

[@Chunckosrev1234]

no

[@RaistarMt]

Mee😅

[@rajeswari4091]

Sir/ mam, is it dil HCl ? Plz reply

[@yashwanthhariharan6624]

where will i get the observation tabular column

[@sharanpatil5624]

Hey what would happen if you add excess naoh

[@isharasewmini1231]

super.. wish your all the best!

[@Indiantubeer]

thnx..today is my practicle .n m soo weak in it .let see wht happens

[@mattkishon1]

So can you tell me what was Observed and a Discusion about it?

[@sarahsweetlove2252]

Wait so is it supposed to go colourless or should there still be some colour and that's when you record final reading??

[@kurdtpage]

Does anyone know the concentration of the Phenolphthalein? Is it a 1% solution?

[@Jmoritz97]

I don't understand the use of cm3. Why not use mL? Please pardon my ignorance.

[@arielpatterson1462]

what's the concentration of the HCl? is it 0.1 M?

[@dr.alimohammed5086]

Q/explain in detail the neutralization curve between the reaction of a strong acid and a strong base ?

[@jasnarahman7444]

Thank you so much. Tomorrow is my chemistry exam

[@mousehead2000]

I worked out the concentration of the HCl to be 0.10mol/dm-3

[@FluffehBuneez]

What is the name of the song used in the video?

[@claricea5353]

+Mr Sock A Piece of Liquid by Joe Satriani

[@chloekeatwilson3338]

what's the equation for this reaction?

[@scidemos]

It's in the video description :)

[@sachinamaliyar3651]

👍Hii.....chloe.😊.You are student of Science

[@BenilJoseph]

What is molality , molarity , normality then?

[@avizenoi]

I like the background music :) Which one is it ?

[@Pelchulisadinosaur]

Why does it looks like it's over titrated? My professor told me that the pink color should last only for 30 seconds, otherwise excessive NaOH is used. It's confusing. T.T