Acid Base Introduction

[@lvenick09]

You are the most amazing teacher you literally explain this in 10min where the average teacher would take a whole lesson and I still wouldn't get it. Thank you so much!

[@mandyads]

Start video at 4:10 if you weren't following up from the previous video. That's when he starts the part you intended on watching when you searched it...

[@AssyrianKing4ever]

thanks. I was just about to close it down

[@bryannguyen658]

Amanda keep doing what you are doing thanks for the update

[@sohaibahmed226]

thank you

[@diplomat2623]

thanks girl

[@2ndintelligentWorld]

what? everything before 4:10 is about acid and bases. In order to understand acid and bases, you have to understand what pH is. and in order to understand pH, etc.. Before 4:10 IS the introduction of acid and base. if you're in high school and they ask for the simple definition of acid and base, go to 4:10. better yet, google it. so sad. people have no idea what they even mean when they say pH, acid, and bases. i mean what they REALLY mean. keep bullshitting your way through your life everyone. another thumbs up!

[@salmaN-yv4zb]

Guess who needs to watch these videos? my chemistry teacher.

[@ZikzakHD]

+salma N nice one haha my teacher needs it too

[@puppetactor2515]

Yeah, all of them

[@Among-blaze]

+salma N mine also he doesnt know anything lel i hope hes watching my comment now if he is i wnna say lel mad bro mr.semi cerkez

[@beardededdie284]

Hahahaa BURN

[@hafsaslam37]

😅

[@girlsgotlove]

Your videos are so helpful. I appreciate all the time and effort you put into these, you are an excellent teacher and you provide great examples.

[@fleshcookie]

ive never not sarcastically called someone a know it all. This guy really is a know it all. Im pretty sure he knows everything about everything. id put money on that.

[@jenniferperla1]

Can I say that you saved me in anatomy and find all your videos helpful. I must have watched your video kidney video twenty times. Thanks.

[@sartuyusuf52]

I got used to ur voice so much that I don't feel comfortable with others explaining anything I search for within Khan Academy 😭. Thank you so much for everything. U r amazing 🙏

[@NATALARIS]

This is so much better than at school, at School all they do is tell you to read the text book. Whereas, this guy actually TEACHES. Teachers at my school dont teach anymore, yet they demand higher pay.

[@joshitch]

man, if you arent a lecturer, you should apply. The teaching world needs you!

[@w8ingforfun]

I see a lot of comments here complaining about teachers and stuff, I think this is a problem in our school system, people know how to learn and to pass, they get qualified to be teachers because they master concepts to a certain level , yet they do not master it conpletely, because the highest form of understanding something is knowing how to explain it simplified to a person that knows nothing, this is what Khan does and I wish more teachers could do this rather than thinking you're dumb,

[@juardine]

Great video. Your videos are helping me with my MCAT studies.

[@KarenJanevich]

I'm from argentina.I studied english cince childhood but never pay attention in class and now i wish i could understand you :( A guy here in argentina traslate your videos and i love you way to explain..but still do not had these videos on acids and bases. well thanks anyway..kisses! :D

[@Deathseize]

@rijaa000 HCl is a acid and H20 is a base. The hydrogen in (H)Cl will eventually dissociate into the H20 because both the solution contains Hydrogen, and the main point of the reaction is to dissociate HCl and H20 completely, so the Hydrogen would ionize into H20(H20(water) is an ionizer) forming H30 the product of the reactant. the Cl will be alone in order for the dissociation to occur. The remaining solutions will have a polar + and - sign(positive attracting negative).

[@MangaDevilCat]

This vid is so much easier to understand than my chem book, so thanks! :)

[@bryannguyen658]

Agree with you

[@grappler7343]

Khan sayin 'STRONG ASSES' on purpose

[@priyakamble6389]

Gazab sal Bhau..!!! Love from India

[@devonelkins9074]

It is a little complicated but lots of other thing helped me break this down thank you this is very good

[@Keviano3]

@kmart166 naw its an amphoteric substance so it can act as both an acid and a base. it just depends on the situation

[@mikethunder84]

HELLO!!!!! LiOH -> (OH-) + (Li+) is a "proton donor" reaction according to Lowry. This reaction also looks like this: LiOH(s) + H2O(l) => Li+ + OH- + H20 + HEAT The O in OH has a proton attached to it, the H. Therefore, it donated the proton th the aqueaous solution and produced heat aswell. buya!

[@zholloway]

This video doesn't really cover pH acid base calculations. You use equilibrium expressions to find pH and pOH. Check out some of the other videos, although I haven't seen Khan use an equilibrium table (ICE table). It's really useful for finding pH from concentrations.

[@EbubeEzeobi]

lol "Just to over-complicate your life a little bit more"

[@Rusty2891]

@StraightShotz Water is pure, if it isn't pure then it isn't water. When water is referenced in chemistry it is meant as the pure H2O compound and is therefore a liquid not aqueous.

[@TheArabrapper]

lmao haven't paid attention in class since discovering khan academy, no teacher is this good.

[@gday1989]

god bless you mahn, u broke everything down for me to understand easily. thanks and kudos to you.

[@marissalee7961]

Thank you! This really helped me understand the three theories.

[@AgyeiAlfred-j5n]

Please start from main introduction examples like the definitions and thier uses and the difference between them

[@mihaissb]

depends on the temperature. ice is still water , and it's a solid. steam is water, but it's a gas.

[@Papaconstantopoulos]

Where in the world do people get off disliking this? Good god

[@AgyeiAlfred-j5n]

The definitions and the uses of acid and base

[@arstgkneio]

13:10 "Okay, a base is someone who... proton acceptor." I laughed for about 5 minutes straight. lol

[@Shannonlovesth]

You're videos are a life saver! THANK YOU SO MUCH!!!!

[@TheLindarella2u]

wish you would add a video on the chemistry of water disinfection using Chlorine and Chlorine and Ammonia.

[@PoochHoney]

you are truly amazing! your videos help me soo much!!!

[@CoenBijen]

I'm affraid there are some people on youtube who are just here to be an asshole, instead of having a good time (or to learning something). Disliking every video they see, except those of Lil wayne or Justin Bieber, is probably the only thing they do here.

[@Metanoiance]

Could not put it better myself :) great comment and yeah this guys is a genius and a great teacher :)

[@Mellmaker]

@lamchop7 Pardon me, however; I have a small correction to your comment. The first group is indeed called the Alkali metals. However the second group is called the AlikaliNE earth metals :) Great vid! exceptionally helpful!

[@keerthikrishnan1250]

Great video thx for sharing Khan!

[@MrOLotsofFun]

cramming for finals -__-... thank you khanacademy

[@sinekonata]

Isn't the OH- the proton acceptor/receiver? If you have H+ floating around, it is received by the OH- to form H2O...

[@manneqn]

disassociate is also an accepted word. = dissociate. although the latter is less awkward to say.

[@patmagrath]

wow this is good gear. been wondering about this since first week of class.... and its almost exam time hahaha

[@9fodbold9]

the "fancy font" is just danish and Norwegian letter Ø or ø. It is because Brønsted was Danish pronounced liked the vowel in soeur (sister in french) :)

[@102102syd]

how does this guy have so much time to make like a gazllion khan academy videos? he's in like everyone lmfao

[@AlexGuitar1987]

I learned more from this video than in school

[@digiconvalley]

jazakaAllahu khairun

[@swng314]

How did it go? I think you could've done it... I had 1 Chem lesson to learn in 4 hrs, and I got a 95 on the test. I would say good luck, but youtube says the post was 6 days ago, so your test is over.

[@dudedude9528]

for acids NAOH will dissociate in water so it becomes Na+ and OH- will the hydroxide bond with a hydrogen making it water or with what will it bond with

[@jollyjokress3852]

When you add the Hcl to the water, why does the H+ cocentration in the water increase if the added Cl also adds to the overall amount of molecules in a defined amount of molecules? My thinkinig: the H+ concentration in the "solution" should only increase if number of Cl was < Oxygen molecules? Where is my mistake in thinking? Does anyone know? Thanks! Another question: what determines the fact that acids prefer dissolving in the aqueous solution than stickiing together? Thanks again ;)

[@eh8164]

Isn't H20 written as (l)?

[@mlieww]

Really clear explanation that helped a lot, thank you! :)

[@carlitok3567]

Love the lesson

[@aussietro]

Question, say we have bicarb, in goes from h2Co3 and dissociates into hC03- then co2 and water. If we have more con base, or we have more HC03- than H2C03, that means that the solution will be more basic. That doesnt make sense to me, ph is the measure of the concentration of protons, so in the last soln there would be more proton in soln. How can we say that a solution with more H2C03 than hc03- is more acidic if there is less dissociated protons in solution, the protons would be on the bicarb

[@salehjoon]

@GreayStatia watch the video before this video if you don't understand.

[@lamchop7]

Hey Sal, small correction here. The Group 1 elements are called the Alkali metals. Alkali earth metals are the group 2 elements. Anyways, thanks for the videos- really helpful. Keep them coming!

[@apurvjee5215]

Everyones ignoring u since 12 yrs

[@doloresbalic8489]

can you give me a link of previous video?

[@kindarevulsion]

strong acids got dem abs yo

[@Bethechange2015]

@lollmaoroflhahaa No, water should not be liquid because it is in an aqueous solution (it is in water) I know it sounds redundant but technically, you would say that it is in an aqueous solution because that helps you see that it is dissociating. Water in water is an aqueous solution. He is trying to show that acids and bases react in aqueous solutions.

[@khanjkong]

Khan u r great!

[@Asd_76]

"Water is obviously dissolved in water..."

[@sahaltechtutorials1448]

Keep going mr salman khan

[@amerakkari4617]

استاذ اونلاين خاص لك Mathmatics Physics Biology Chemistry

[@Mrmezmarise]

Just a heads up for anyone doing UK exams (and our crappy mark schemes), most boards do not accept disassociate. I lost marks this way :/

[@annie10103]

Strong independent acids who don't need no alkali

[@windhorsage]

In the B Lowry Base, it's not that the "Li+ has accepted the fact that it has a proton +" that make it a base, it's that the OH- ion can ACCEPT a proton (H+) out of the solution and make a water molecule - thus it is a proton acceptor.

[@codyhildebrand13]

The ion is a molecule.

[@mangazalucmacku1811]

thanks all is good i enjoyed your teaching

[@elybellysmellyely]

hooray for speed learning...exam in 20 minutes :S If I pass...thank you a bazillion times!!!

[@nkt20880]

Thank you for making this video.

[@mindfreakerry]

@fiskcam nah we use (aq) not (l)

[@ShortenMonteCristo]

How do you know when to put the plus or minus symbols by them? Only when they're aqueous and disassociate?

[@warf13579]

12:25 you spelled proton wrong it bothered me alot but thanks for the video youre soooooooooooooooooooooo awesomeeeeeeee :)

[@sciencenerd7639]

thank you

[@XJetBoomX]

What are the ions left over from the acid's "donation" of a proton doing in the aqueous solution?

[@user-nu3el2mo2w]

how come in my organic chem class NaOH is considered a weak base; R- > NH2- > Sodium acetylide > CH3ONa > NaOH ??

[@danielbenz9155]

Good video, but he incorrectly refers to Group-1 of the Periodic Table as the "Alkaline Earth Metals." That is Group-2; Group-1 is the Alkali Metals.

[@segheirhicham1783]

does H+ cause acidity?

[@jaweriasiddiqui2193]

segheir hicham Yeah.

[@lollmaoroflhahaa]

Should'nt water be (l) and not (aq)?

[@JustAnotherYoutubChn]

oh wow, i had my chemistry finals today and i watched the videos until here, i stopped watching them and i left for my exam and guess what? i could have solved 2 questions which i did not if i would have looked just this one video! :(

[@morsmb1]

ty very much butttt i didnt understand this part--> 8:16 if it consumed X how come you got 2X? one for each molecule .. is there any video explains this part?

[@tiffanyxiao1485]

The speaker is absolutely cuteee lol

[@gemmagerm17]

What is the link to the previous video?

[@dthornberry7]

all these colors make me feel like im on acid

[@sohaibahmed226]

so basically strong acid can break into two parts for ex. hcl=h+(aq) + cl-(aq)

[@andreistephen4965]

yep strong acid will completely dissociate weak acids will only show partial dissociation

[@SynTank]

Only our shitty lecturers would downvote videos like this, taking what they teach in 3 hours and effectively teaching it in 18 minutes

[@SCIGEEK15]

Sal, can you please make a video on LEWIS acid and bases.. using pushing (curved) arrows? im having some trouble understanding the material in class

[@schroeder8911]

NaCl / KOH

[@yekaterinakobtseva1471]

Thank you so much for this video! The explanation was so great and clear =]

[@sibusisokopman5892]

how can i download videos

[@daisy1250]

i think this is some great teaching! :)

[@Rusty2891]

@CherryTomato09 Water is a liquid not Aqueous. And to my knowledge there's no such thing as an aqueous liquid - its one or the other.

[@ieatdrinks]

learned a lot thanks

[@360wheelz5]

My chemistry teacher disagrees that HCl is a Lewis acid, like man she gotta understand Lewis isn't another 'concept' but just broadening of the Arrhenius! What you can the "gray area" is what my chemistry teach disagrees on. According to her, the Lewis acid just exists as itself, an independent concept of electron acceptor only, while all other acids are not Lewis acids! It's VERY irritating.

[@csulakers1317]

@lollmaoroflhahaa Refers to aqueous solution, which is another way of saying water. Aqueous solution only refers to water, not mercury or any other liquid. It's just a more specific way of saying "liquid water."

[@jabberwocky685]

Why would BF3 exist if Boron needs four bonds.

[@codosacho5924]

what happens to the OH then after dissociating from the base ?

[@kartikjain4409]

great video, thanks.

[@nashar65]

how we have this H+ conc to be 10 to the power -7?

[@risquewebsite]

6 people need to actually watch the video.

[@Thetruorange]

UHM,can i just ask how to solve this kind of problem: What is the pH of a 0.040M ammonia solution at 25 degrees celsius?? :)

[@terradan2013]

Beautiful!