Titration (using phenolphthalein)

[@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!

[@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! :)

[@thekurdishgirl6538]

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

[@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

[@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

[@mwilamike4496]

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

[@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 ;)

[@scidemos]

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

[@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

[@shivshankarchaudhary9644]

This experiment clarify more clearly that a lecture.

[@isteaqahmed957]

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

[@Cafe11A]

Yesss!!

[@mariamhashim9283]

Lol

[@LaXayGaming]

😂😂

[@vinylxr7]

🤣🤣

[@abhilashsbharadwaj8630]

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

[@harkritjassal8335]

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

[@icetouch77]

you dropped the base too hard

[@scidemos]

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

[@shabanamoona3231]

Lmfao

[@ujjwalrawat5105]

You made my day :)

[@ravikumawat7006]

Its should pale pink not dark pink so its wrong experiment

[@bharwabhindi3786]

😂

[@UmuhireOdette]

Thank u very much now I understand titration

[@ssr4181]

thanks! tomorrow is my Titration experiment :)

[@ammarfaruqui6258]

Fire Man same here

[@amirali-cw1ky]

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

[@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).

[@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.

[@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 ;)

[@swaggerking9118]

How many of you came for your practical examination

[@Chunckosrev1234]

no

[@nirujaanton494]

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

[@ashishdange3988]

Hi

[@ashishdange3988]

Nice one

[@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.

[@Yusufk84]

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

[@mansipuri6437]

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

[@AB6media]

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

[@mmeste5218]

song goes hard at 2x speed

[@youshaahmed88]

Bruh I was here to study not vibe 😆😂

[@samadritatalapatra8475]

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

[@ritenchaudhari397]

Thank You man I seriously needed that

[@kirankumarp9103]

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

[@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 :)

[@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.

[@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

[@Anonymous-xh4hs]

@@ignited_beast8113 ikr damn...

[@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.

[@jeanbooysen3845]

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

[@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.

[@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

[@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

[@itsthandok]

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

[@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.

[@narendradubey9062]

thanks to this video this video help in my practical

[@scidemos]

Narendra Dubey you’re very welcome 👍

[@myvideosfortheworld6122]

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

[@scidemos]

🤘🏼

[@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.

[@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

[@wingbull2009]

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

[@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.

[@sciencethink]

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

[@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 ? :)

[@이서현-i9q9i]

It is sort of random but the music is so good.

[@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! ^^

[@GdkfGkfgk]

الي جاي من عند الاستاذ علاء الدراوشه🥲

[@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

[@samcrossley173]

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

[@scidemos]

I hope you did okay on your test :)

[@vsatishkumar4900]

Going to write it today

[@Indiantubeer]

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

[@isharasewmini1231]

super.. wish your all the best!

[@alex471996]

ITs better in my opinion to have the alki in the flask and so is pink before the acid is added. Keep adding the acid until it turns colourless. As you can see the solution in your experiment is not completely pink (some swirls of colourless liquid) but never the less a gret video.

[@jasnarahman7444]

Thank you so much. Tomorrow is my chemistry exam

[@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 :)

[@mousehead2000]

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

[@malv4935]

Thanks! Lovely video and lovely background music :D

[@scidemos]

Thank you for the positive comment :)

[@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. :)

[@duaat.mohammad3961]

Wow! i understand it better now..!

[@masturasleman900]

Thanks for Helping me tomorrow is my test

[@masturasleman900]

May Allah bless us in our experiment by your experience 💘💝💖👌🔰

[@geetapal4633]

It should be a faint pink color

[@shivaneri2294]

Splendid sir

[@فالحفالححسن-ط6ل]

Thank you so much you do this lab in simple way🖒🖒🖒🖒🖒🖒

[@scidemos]

فالح فالح حسن Thank you

[@DaRealG]

I think that it is so useful in life

[@sophiacuffy3057]

this sure helped me to understand

[@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.

[@thesmasher4828]

Nice

[@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.

[@sakshikuchankar9233]

thanks it's wonderful

[@WTFbrownie]

thanks for showing this. my lab instructions are too technical.

[@samadshaikh4201]

Thanks

[@GStar1]

Thx. I'll pass today in my exams.

[@gemmabarron6638]

GStar did you

[@jitumanithakurai1297]

beautiful triple triple music nd good job...thank you sir..

[@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?

[@samikshakohad6344]

Ty it helps me a loy it is like a revision for us

[@avas4230]

my teacher told me to watch this and i give it a 5/10

[@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.

[@logplasa9651]

U helped me a lot in my practical tnx bro

[@a.x1840]

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

[@browngurl185]

i thought the phenolpthalein was supposed to turn the HCl pink and as you added the acid from the buret it would start to decolourise . . thats what happened when we did our experiment

[@scidemos]

Both units are the same so it doesn't matter which is used really. I suppose it comes down to which habit you've acquired over the years and who taught you when you were younger. I use both of the units on different days probably depending on my mood really :)

[@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'?

[@adityarajpurohit7008]

thank a lot of you bro ..............it will be useful for me.........

[@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

[@xecret8570]

In india we have to use oxalic acid instead of HCl and we have to make it using molarity. Btw Nice video

[@abhijeetsutradhar5661]

Amazing

[@chemosarefunny]

Shouldn't you add acid from the burette to the alkali on the conical flask as alkalis are more dangerous and they don't flow as easily as acid? Just what my chemistry teacher taught me.

[@aryn-jaeger]

Good....

[@masdarec7158]

THANK YOU !!

[@scidemos]

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

[@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??

[@prakharsrivastava5054]

Thank you so much

[@judyopondo7454]

Was the pink supposed to turn a Base

[@mattkishon1]

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