pH and Buffers
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10 жыл бұрын069 - pH and Buffers
In this video Paul Andersen explains how buffer solutions maintain pH in a solution. A buffer solution is made up of a weak acid and its conjugate base. As strong acids or bases are added the pH remains stable. A good buffer solution has a pKa value equivalent to the pH and equal amounts of the weak acid and the conjugate base.
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@RedInk102 7 жыл бұрын
6 hours of studying this chapter and two two hour lectures. didn't get it. One KZfaq video later and it makes perfect sense
@vikas1933 7 жыл бұрын
can anyone please explain me this sentence . in metabolic acidosis , one mechanism is incresed acid buffer excretion--- ph changes rapidly with relatively small change in H concentration , limiting the amount of acid that can be secreted as free H in the urine
@DaeguRay 7 жыл бұрын
your body has to produce more buffer if the amount of acid secretion is increased
@Problemsolved222 7 жыл бұрын
Literally same...
@mmmr856 6 жыл бұрын
story of my life
@electro_yellow9295 3 жыл бұрын
You're only able to understand the video because of the studying you did. You just needed someone to put it in an understandable language.
@adamleach7860 8 жыл бұрын
Video 69. I'm feeling some chemistry here...
@hamedhosseini4938 8 жыл бұрын
+Adam Leach HAAAAAAAAA
@barta5ot-395 7 жыл бұрын
i was just going to comment the same thing. G fucking G
@retinaz2220 5 жыл бұрын
Nice
@Dratini__ 4 жыл бұрын
@@retinaz2220 nice
@thewolfgang2963 4 жыл бұрын
Adam Leach holy crap that was 4 years ago
@robertperez9889 8 жыл бұрын
subscribed, we need more teachers like you. it takes talent to teach someone something new, professors dont realize it but just because you have a phd in something doesnt mean you can teach it to others. keep up the good work
@TheGirlsfrommars 3 жыл бұрын
You taught a 30+ year career geophysicist more in an hour than I learned in college. Hats off.
@Moonchild98 3 жыл бұрын
From undergrad, to my masters, I keep coming back to this video. You're godsent
@VAMWSZ 10 жыл бұрын
It's amazing how the videos I need come out exactly as my professor begins lecturing on it. The timing couldn't have been any better.
@organic_angel 6 жыл бұрын
You sir deserve a round of applause for this video. Thank you.
@nexonlikesmoney 10 жыл бұрын
U r a much better presenter than mr khan how u utilize visual devices and showing ur face that actually makes us think u r talking to us. You are our life savior for ap sciences
@comicbest2662 3 жыл бұрын
but mr khan teaches more intuitively
@laeb08 2 жыл бұрын
I'm learning a whole lot on KZfaq, unlike in class where my professor doesn't even understand what he/she is even talking about; just reads directly from textbooks without any rationalizing
@Nihadhawan 6 жыл бұрын
Your voice is so good.. understood everything so clearly
@MsBenStahl 8 жыл бұрын
Love your videos. Could you show a video that explains acidity in the body. Maybe show the flow to keep balance after drinking soda?
@spintius3752 8 жыл бұрын
You are really good at explaining. Thank you.
@diegoamores9295 4 жыл бұрын
I just got kicked out of my chemistry class because I forgot my handout, I’m glad this makes more sense than the class
@gorgeousgirl7166 7 жыл бұрын
Thank you sooo much ....spent an entire day trying to figure it out my self and couldn't bt there you r, in just 5 min ..thank you .
@abdullahmedicalstore7762 4 жыл бұрын
Really helpful! Frm my childhood I found these theses topics cause of my head ache.. Bt now I really feeling I should learn more its too much easy.. 😍Thanku
@user-xq2mv2sg2h 3 жыл бұрын
Thank you very much , you can't imagine how that was helpful !
@siabf96 10 жыл бұрын
@Cristopher Ray Over there you have a weak acid and its salt. Notice how it's the same thing as having a weak acid and its conjugate base. It's like having H2CO3 and HCO3- (beacuse NaHCO3 ionizes into Na+ and HCO3-)
@1935ofGranalaia 8 жыл бұрын
another great job mr. andersen
@alfredodelgadillo347 6 жыл бұрын
thank you so much, these lessons are life saving!!!
@maysoonalghaslan4639 8 жыл бұрын
Thank you so much. You are the best. I wish I can like this video ten thousand times!
@alikiandroutsosantico3268 10 жыл бұрын
Thanks a lot, that's just what I needed!! Love your videos :)
@billw.5397 9 жыл бұрын
thank you for saving me during chem and bio. cheers.
@sinedmeth4781 6 жыл бұрын
yes that was very helpful Mr Anderson. U D MAN
@kmlljk 8 жыл бұрын
still don't understand XD. Maybe you can add definations of pKa or other words every now and then. It will help greatly :)
@OliverJoshuaJacob 9 жыл бұрын
Thank you . this was very helpful. What software so you use to make your videos?
@Desiparth 7 жыл бұрын
Smh this is better than khan academy
@SunSunSunn 6 жыл бұрын
no
@jon-paulplacencio775 5 жыл бұрын
Parth Shorey what is smh?
@Legit375 4 жыл бұрын
@@jon-paulplacencio775 Shake my head
@danialraza9795 3 жыл бұрын
@@jon-paulplacencio775 Smiling much happier
@yesnt8907 2 жыл бұрын
@@jon-paulplacencio775 Shops must halt
@russell2185 6 жыл бұрын
Awesome Video. Succinct and straight forward.
@aamirjankhan8642 6 жыл бұрын
Very informative, understood a lot.
@R00567 10 жыл бұрын
Awesome videos :-D I'm studying for the mcat and your videos help a lot conceptualizing certain topics :-) god bless
@arbrikopliku6736 4 жыл бұрын
How did you do on the mcat?
@Kugelblitz000 2 жыл бұрын
How did you do on the mcat?
@adelhajhasan3093 7 жыл бұрын
great explanation
@kamendimitri5624 3 жыл бұрын
Ty so much for these videos!
@christopherray4544 10 жыл бұрын
I was under the impression that to create a buffer, you need both the acid and a salt of the acid? So, for example, a solution of H2CO3 mixed with NaHCO3. Could you explain?
@joanangelina 7 жыл бұрын
Thankyou so much you are the best!!!😭😭
@saranour473 9 жыл бұрын
very helpfull .....thank you so much
@Batman-ws9lb 3 жыл бұрын
Very good video. 10/10 would recommend to fellow students
@michaelhumphrey8628 7 жыл бұрын
Great vid. Thank you.
@kripashankarshukla4073 6 жыл бұрын
I wish I could like this video to infinity
@ae7100 5 жыл бұрын
Mr Andersen, hi. I have a question regarding the shift of equilibrium at 2:19. Why adding hydroxide ions will cause the equilibrium shift to the right? Thanks.
@avrohomhousman5958 5 жыл бұрын
I was wondering that too. I think its because the hydroxides bind to the H+ ions (on the products side of the reaction) and form water. This removes some of the H+ products so the reaction shifts right to create more of them.
@curtpiazza1688 2 жыл бұрын
Well explained!
@quantum_psi 8 жыл бұрын
Very nice one Mr Anderson :-)
@makusudi1 10 жыл бұрын
Awesome video!
@ahmadsaqibqaeym1684 Жыл бұрын
Too helpful 🙂. Thanks 🙏🏻
@SuzanneKnop 10 жыл бұрын
haha Mr. Andersen like from matrix (took me 3 videos to finally realize why that name sounded familiar) also THANK YOU SO MUCH these are great
@thechibyweeby922 4 жыл бұрын
Please help me know, if there is any effect on the buffer of blood if small amount of acid or base is added in it ?!
@Idalb0e 4 жыл бұрын
Very nice video
@echelontimepieces22 10 жыл бұрын
This is just what I needed
@coleeoo3740 4 жыл бұрын
My bio teacher never has a lesson plan so you’ve basically thought me every thing I know
@AA-cp6vq 3 жыл бұрын
Best teacher in the world 💙💙
@prosentinel8767 5 жыл бұрын
Amazing vids!
@wlo23ex81 4 жыл бұрын
does OH+H2CO3->H2O+HCO3? 0:51 How does it push hydroxide ions to the right if it's not the same equation?
@rhiannn3416 4 жыл бұрын
this is super super late and you probably either know this already or your test is long gone, but adding a base to an acid will make water and a salt. ie, the hyroxide ions from the base and the hydrogen ions from an acid will combine to form water: OH- + H+ -> H2O Therefore H+ Ions are consumed and equilibrium shifts to the right to replenish loss of H+. Hope this helps!
@yushuagreen5546 8 жыл бұрын
really really very useful, but :( you speak very fast!!!! thanks a lot
@aymankhatib297 4 жыл бұрын
at 3:18 he says that the [H+] is the pH. Isn't the pH -log of [H+] and not just the hydronium concentration?
@kiaragil543 6 жыл бұрын
thank you!!! I finally get its... its video is very usefulll :)
@professorm4171 4 жыл бұрын
So is HCO3 a conjugate base in the H2CO3 H + HCO3 ?
@iliriacum666 9 жыл бұрын
Thank you...nice one
@joelpinhoneto5225 7 жыл бұрын
Amazing!
@learntosing5397 8 жыл бұрын
best video ever,nice!
@learntosing5397 8 жыл бұрын
so nice comment man,shiiiiit
@ScientistRenzo 3 жыл бұрын
great vid
@nativechatter999 7 жыл бұрын
Nitpick: Your seesaw diagram is incorrect. The "more acid" and "more base" should be swapped, because if base increases, pH should increase, and if acid increases, pH should decrease. Your diagram implies that more acid will increase pH and more base will decrease pH, which is incorrect.
@neverbackdown1918 4 жыл бұрын
Nice video
@michellek.7833 4 жыл бұрын
WAY FUCKING HELPFULL! I LOVE YOU, MAN!! YOU'RE THE BEST!!!
@poliax7066 7 ай бұрын
Thanks!!!
@bissxiaochuan3342 4 жыл бұрын
really help a lot！
@karou_jee 4 жыл бұрын
how long does it take for buffer control of blood pH
@ranaaydn8989 3 жыл бұрын
thank you sir
@yumenoritsu 8 жыл бұрын
Thank u!! :D
@arjunmohandas5552 7 жыл бұрын
good one !!
@SuperTizzy09 10 жыл бұрын
good stuff
@natepedigo8470 5 жыл бұрын
Nice
@Phillips1758 4 жыл бұрын
Have you got any vidoe on Diabities
@monty583 8 жыл бұрын
why does adding protons push it to the left? the H2CO3 cant accept more protons?
@martynvarley9984 8 жыл бұрын
Chemical equilibria always resist the change in a reaction. It's Le Chatelier's principle- look it up! it's integral to all chemistry. Think why would more product form when its reactant concentration increases? it acts to reverse the change by forming product and using up reactant
@jamesgates Жыл бұрын
nice
@lovebug8627 10 жыл бұрын
Hi. I'm putting a request for tissue and membranes video.. Thank you :)
@roshnijagadeesan5686 8 жыл бұрын
But I wish I could like it 10,000,000 times
@deepanshukumar6190 10 жыл бұрын
Can you please explain Common ion effect. It's a humble request. please. :)
@esa2236 7 жыл бұрын
What I don't understand is how the solution is more acidic if the concentration of the H ions are less than concentration equilibrium. Shouldn't it be the other way around????? I thought it should be more basic because the concentration of H is less so OH should be favorable. I'm referring to 4:30
@i_like_to_move_it_move_it 4 жыл бұрын
Mr Anderson... this is Mr Smith, I want to have a word with you
@ONLYuseMEgunsOFWALL 9 жыл бұрын
What happens if you add water to a buffer?
@bortolinho 5 жыл бұрын
Nice.
@pri7974 8 жыл бұрын
Thank you!! :)
@tinashemuza8671 5 жыл бұрын
why dilute aqueous ammonia alone will not act as a buffer solution.
@eiklinoh9402 7 жыл бұрын
amazing
@roshnijagadeesan5686 8 жыл бұрын
Same.
@siddharths8218 4 жыл бұрын
nice.
@ZerinaPL 10 жыл бұрын
The correct way to take the negative logarithm of each side, and we get pH = pKa + log [A-]/[HA]
@dannyhuang8773 9 жыл бұрын
Can someone help? :( I can't seem to find a video on titrations that shows the calculations and I don't get this problem. Two drops of indicator HIn (Ka = 1.0 * 10^-9), where HIn is yellow and In- is blue, are placed in 100.0mL of 0.10 M HCl. The solution is titrated with 0.10 M NaOH. at what pH will the color change (yellow to greenish yellow) occur? The answer is supposed to be 8.0 but I need help on how to do it. I looked online and found a source that showed: The color change occurs when the concentration of the more dominant form is approximately ten times as great as the less dominant form of the indicator [HIn]/[In-] = 10/1 Ka = 1x10-9= (1/10) [H+] [H+] = 10 Ka = 1x10-9x 10 = 1x10-8 pH = 8.00 At pH 8.00 color change occurs. I'm confused. How could you tell that it occurs when the dominant form is approximately ten times as great? HELP? D:
@A.A.N4533 9 жыл бұрын
Danny Huang I don't know if you need this any more but here goes.... Firstly, you have to know the pH formula involving indicators. The formula is pH= pKa + log (In (aq)/HIn(aq)). One thing to note here is that HIn is referring to a weak acid indicator and In represents the indicator after it has lost a proton (which is why we have a change in colour). We know in this instance that Ka=1x10^9 therefore, pKa= -log(1x10^9) = -9 In the case of indicators pH=pKa. So we can say that the pH is equal to 9. We then have an equation that looks like this: 9= log(In/HIn). You have to know that the concentration of HIn is equal to 10x In. So we can write in place that 9= log (10/1). This 10/1 is just the ratio between the In and HIn and unless stated otherwise will always be the case. pH would therefore be equal to 8.
@Jessiemats 6 жыл бұрын
Thanks
@syafiqanorhaidi7584 8 жыл бұрын
helpful!
@Words-. 6 ай бұрын
thanks
@esa2236 7 жыл бұрын
can someone give me a reason why a scientist would want to use a buffer in his/her experiment? I understand how it works, but I don't know why they would need to do it. Also, why wouldn't it work if it was a strong acid and a weak base?
@ahmeddawood6791 7 жыл бұрын
buffers can be used to maintain blood ph for injectables because change in the ph of blood can cause denaturation and hyper/hypo acidosis in blood and they can also be used as a natural defense of freshwater against acid rain
@Mm-yk5mm 7 жыл бұрын
thank u 😊😊😊
@emilius_525 4 жыл бұрын
What does the A stand for in HAH+ + A-?
@miraaisha7080 4 жыл бұрын
it is a conjugate base
@vikkiedonar3176 6 жыл бұрын
thanku sir
@taylorkamann21 10 жыл бұрын
Can you do aTOEFL video???
@sushilsonam88 8 жыл бұрын
you are improving my grades
@MukeshMathematics 2 жыл бұрын
♥️
@cody4077 6 жыл бұрын
First time Bozeman didn't work for me :( Onto the next xD
@michaelward3170 7 жыл бұрын
What exactly is the conjugate base?
@kripashankarshukla4073 6 жыл бұрын
When an acid looses H+ ion, an anion is formed which wants to take H+ ion or proton. So, according to the Bronsted Lowry concept, it will be considered as a base. The stronger the acid, the weaker is the conjugate and vice-versa
@oviyanaresh5775 6 жыл бұрын
so that's why H and OH =H2O (water) is good to maintain body's pH
@MrBears25 6 жыл бұрын
Carbonic acid isn’t really weak in relation to the trillions of cells involved in respiration and the fact as you add carbonic acid the ph lowers I defiantly believe there is a huge link between burning fuel and cancer