Professor Dave, you’re a lifesaver. If I get accepted for transfer at my dream university, graduate, then have the life I’ve always wanted I want you to ordain my wedding.
@TheNaikas4 жыл бұрын
Did you?
@omarqacle4 жыл бұрын
@@TheNaikas its been a year how he finna do all that in this amount of time
@jubileej16294 жыл бұрын
@@omarqacle girl u neva know
@marcus94413 жыл бұрын
Update us
@GrandTheftAut03 жыл бұрын
u marry yet?
@vanityromano37484 жыл бұрын
I want to cry with joy at how easily you explained this, thank you for alleviating a huge frustration!!!
@elizabethcolon31818 жыл бұрын
If you were my real professor i'd have 105 in chem you explain so well give great examples and you make sure we understood what you showed us by making us do an exercise ourselves. What great way of teaching!
@NoviProleterijat5 жыл бұрын
@Usern Last You are right! However this is not equal for children or I should rather say not for EVERY child. Guidance is important until a child matures and so the teacher can be a strong factor in the students success.
@chemistrywithcoffee13814 жыл бұрын
In my 13+ years of experience, I can tell you that some students need more support than the others. World is not fair! But we can make it work by publishing quality videos for the needed.
@PunmasterSTP2 жыл бұрын
Hey I know it's been years, but I just came across your comment and was curious. How have your studies been going?
@ivoryas16962 жыл бұрын
@@chemistrywithcoffee1381 You know, that's pretty fair.
@marcusayala69334 ай бұрын
@@chemistrywithcoffee1381 That's equity, not equality
@hamzamalik89256 жыл бұрын
Brilliant teaching. Really appreciate the thought and effort made into making these videos.
@JasonChanMarioKartProPlayer6 жыл бұрын
Molarity times Volume (MV)before titration= MV after titration 75/1000 x 0.5 = 165/1000 x M M= 0.2272727... This also worked and my teacher told us to use this method
@educationalaccount59635 жыл бұрын
But only for monoprotic substances
@blinkeverlast7183 жыл бұрын
i think this only works with niche acid-base titrations? along with dilution problems - c1v1=c2v2
@cheddar60203 жыл бұрын
Coincidence. Only true when the stoichiometric ratio is 1:1 In fact, his video mistakes this when H2SO4 reacts with NaOH
@pasdpasse4393 жыл бұрын
@@cheddar6020 It is just an example dude, however I am curious, why wouldn't it react? If I remember correctly, they both are soluble
@wamakamutale412312 күн бұрын
Assuming 1:1 molar ratio. If we balance the equation it's 1:2 giving us 2.784M
@rokotrstenjak1895 Жыл бұрын
you forgot to do molar ratio for the first problem. you should've multiplied the moles of H2So4 by 2 due to the 1:2 ratio. Thank you
@kamogelomokale91836 ай бұрын
I was also thinking the same thing
@rucio11185 ай бұрын
agreed
@yuiii11933 жыл бұрын
Wait, did I just finally understand the topic in under 2 minutes and 40 seconds? Yes. Thank you so much prof Dave! You made it so much easier to understand!
@beckya.95943 жыл бұрын
Thank you for NOT over complicating your explanations. 🙏🏽
@rohmanjakarta97323 жыл бұрын
On the example, the mol of base should be two times the acid so the mol of base is 0.0696
@meganxu54756 жыл бұрын
i want the 5 hour version of the jingle
@yukitai90634 жыл бұрын
Imagine a yr12 chemistry class in Australia watching someone from the United States.
@kburishkin7 жыл бұрын
Your videos are great...I recommend my students to view them quite often. However, in this case it may have been better to use a monoprotic acid in the example...
@incognito75757 жыл бұрын
Yes, this is my concern too.
@lottajarvi4768 жыл бұрын
Thank you so much, your videos have been super helpful as I have been studying for my big chemistry exam!
@ProfessorDaveExplains8 жыл бұрын
my pleasure! you can do it!
@dragon.fromindia32352 жыл бұрын
SELL GOLD AND SILVER BUY PLATINUM PRICE IS LOW NOW PROMOTE PLATINUM PRICE IS RISING LIKE GOLD....
@AmanSharma-xz8nz5 жыл бұрын
Sir your video was very helpful I understood everything I wish that u were my chemistry teacher
@rosieleaverton2 жыл бұрын
I was stressing really bad over my homework because the other resources my teacher gave weren't helping, but your video made it so incredibly clear. Thank you!!
@kripashankarshukla40737 жыл бұрын
Sir your theme song and your explanation both are the best.
@aionioshagiazo4 жыл бұрын
Hi Prof. Dave, I have a question: Should we not consider the balanced equation of Sulfuric acid and Sodium Hydroxide when we do the calculation? The ratio of acid/base should be 1:2, then the mole of base should be 0.0348 x 2 = 0.0696...please advice thanks!
@ProfessorDaveExplains4 жыл бұрын
it's only strongly acidic for the first proton
@aionioshagiazo4 жыл бұрын
@@ProfessorDaveExplains Thanks! I am doing Cambridge Chemistry A/AS level review presently... from the other references I gathered, it's a general rule to consider the balanced equation. But I guess, it depends on the curriculum not sure.
@icduay49573 жыл бұрын
@@ProfessorDaveExplains Hi Dave, I love your videos because they're very easy to follow. I would just like to correct this one. It is true that sulfuric acid is strongly acidic for the first proton, but that is relative to water acting as a weak base. In this case, you have a strong base, NaOH, reacting with H2SO4. It is strong enough to ionize the second proton, so the ratio is 1 NaOH : 2 H2SO4. Another example would be titration of acetic acid, a weak acid, to a strong base. You can still remove the proton from the acetic acid even if it is weakly acidic.
@fasc22982 жыл бұрын
@@ProfessorDaveExplains At a glance it seems that the 3.0 M sulfuric acid also as 3.0 N sulfuric acid. but Sulfuric acid is easily deprotonated twice by NaOH, so it is 3.0 M but 6.0 N. Therefore the NaOH would actually be 1.39x2 M. pKas are -2.88 and 1.99. while the second proton is not strongly acidic, its still easily deprotonated by the strong base NaOH. Otherwise would be like saying Acetic acid pKa = 4.75 is not deprotonated by NaOH because its the first is a weak acid... Treating 1M H2SO4 as 1N H2SO4 can have catastrophic consequences :s I also second IC Duays comment.
@raphaelschiess4283 Жыл бұрын
@@ProfessorDaveExplains The second proton (the one of Hydrogensulfate) will still react with the hydroxide anions in the solution. Thus, the stochimetric factor of 2 has to be taken into account.
@tunistick804410 ай бұрын
breef, 1/a.n(titrator)=1/b.n(titratee), such that the formula of both the titrator and the titratee is a.titrator and b.titratee
@lucasvdb98110 ай бұрын
This is exactly what I was looking for, tysm!
@hanyanhavall39843 жыл бұрын
Thenk you professor you saved my life i was having a seminar and i got 10/10❤️
@yanapat3453 ай бұрын
thanks pookie i missed like a week of school and didn’t even understand this lab
@TheSecretBuster8 жыл бұрын
You are my go-to channel for chemistry help! Keep making content they're really informative and helpful! In the future videos, can you please make some on organic chemistry? Such as naming and drawing hydrocarbons in functional groups, or anything related to organic chem. Thank you and keep doing what you do best!
@ProfessorDaveExplains8 жыл бұрын
+TheSecretBuster my friend, i have an entire organic chemistry playlist! 38 clips. check it out.
@TheSecretBuster8 жыл бұрын
Professor Dave Explains Oh haha just saw them, sorry for the confusion.
@arihantjain28452 жыл бұрын
50 ml of a solution which is 0.050 M in the acid HA (pka = 3.80) and 0.10 m in HB (pka = 8.20) is a titrated with 0.2 M NaOH. calculate the pH at the first equivalence point, and second equivalence point. Please explain such question including this!
@nuhiyaather95527 жыл бұрын
Thanq sir u make the concept very easy to understand with in short time
@Maddie050078 ай бұрын
For real i couldnt get this concept this clearly anywhere else.🎉🎉
@PunmasterSTP2 жыл бұрын
Acid-base titration? More like "This is amazing information!" Thanks for sharing another very high quality video.
@andrewjustin2568 ай бұрын
1:40 Mr. Dave, perhaps you missed the point on using the stoicheometrical ratios. Besides you did not even balance the equation. Have a look at this: 2NaOH + H2SO4 ---> 2H2O + Na2aSO4 That implies you had to multiply 0.0348mol with 2, then divide with its volume. Because we need 2 miles of the base to neutralize just 1 mole of the acid, suggesting the resilience of the acid. So, 0.0348mol×2= 0.0696mol Then 0.0696mol/0.025L = 2.784M
@sekhar94798 жыл бұрын
that was quite helpful,keep on making such videos
@matthewgeistfeld40358 жыл бұрын
How is that first math example a 1:1 mole ratio? Wouldn't balancing the equation between the acid and base result in a 1:2 ratio between sulfuric acid and sodium hydroxide? H2SO4 + 2 NaOH --> 2H2O + Na2SO4 Thus making the answer half of what you have listed...
@ProfessorDaveExplains8 жыл бұрын
+Matthew Geistfeld it's true i maybe should have used a monoprotic acid, but the Ka for the second ionization for sulfuric acid is tremendously smaller than the first, so it's not at all the same as considering it to be twice the volume of acid.
@incognito75757 жыл бұрын
Thanks!
@eddiekim24756 жыл бұрын
Professor Dave Explains I understand this but googling other examples of this same problem they do a 1:2 ratio. Why is that?
@faithjohnson66494 жыл бұрын
How did you get the 11.6mL??
@A-Silver4 ай бұрын
hard carry after 8 years, thank you so much!
@ishkil3 жыл бұрын
I thought the stoichiometric ratio of H2S04 to NaOH is 1:2. why is the moles of acid equal to the moles of base? I'm confused about the conversion part can you pls clarify. thanks!
@nickolasspagnolo73043 жыл бұрын
I think he just made a mistake, I found ratio is 1:2 also.
@JakeArnet Жыл бұрын
Very helpful. Thank you for the clear explanation Professor Dave!
@dustindusterooni36013 ай бұрын
Thanks dave
@missygarrett13384 жыл бұрын
One more thing, maybe include the balanced chemical equation too as part of the solution to the proposed problem. :-)
@lanomusambazi86542 жыл бұрын
I think so too because the stoichiometrical mole ratio in the example for NaOH and H2SO4 is 2 to 1 when the equation is balanced. Therefore the solution should have been 2.784M and not 1.39M.
@lesnerchai21862 жыл бұрын
TRUE, the ans is wrong
@chennnpai4 жыл бұрын
It’s so much clearer now that I have gotten your explanation, thank you!
@FatimaHassan-mj8hr2 жыл бұрын
Thank you, it is really useful
@archiesomaiya Жыл бұрын
You are wrong. Conc of naoh is 2.784 since it's a 1:2 ratio
@emlmm888 жыл бұрын
Also, next semester I'm supposed to take Physical Chemistry. If possible, videos on that would be greatly appreciated.
@bennettegaper43446 ай бұрын
Thank you
@Shykai4499 ай бұрын
W you just dropped the exact answer for what i'm gonna need to do for my lab
@missygarrett13384 жыл бұрын
Great video but would you please consider updating the graphics to show the proper glassware (change the beaker to an Erlenmeyer Flask) since you need to swirl to mix.
@ProfessorDaveExplains4 жыл бұрын
you can do it with a beaker and a magnetic stir bar, actually that's the most common way since it allows for constant stirring
@missygarrett13384 жыл бұрын
@@ProfessorDaveExplains but even then the flask is preferred.
@opufy Жыл бұрын
I like that method, but I just used good ole c1v1=c2v2
@chemistrywithcoffee13814 жыл бұрын
I liked the all the video but especially the backgrounds!!!
@alva96902 жыл бұрын
FINALLY IVE FOUND CHEMISTRY JESUS!
@mabiakamal9322 Жыл бұрын
Really good
@SimplyyBravo Жыл бұрын
its 2am and im on campus a day before the exam but im patting myself on the back for getting the comprehension problem right haha
@xamaadashnuur16486 жыл бұрын
Thank u prof u save my day
@allieharuu73083 жыл бұрын
Aside from indicators, how could we determine the endpoint of acid-base titrations?
@mattkrier58563 жыл бұрын
THANKS FOR HELPING ME MAKE BIODIESEL
@qweboss87842 жыл бұрын
Iam thinking that 1 mole of H2SO4 reacts with 2 mole of NAOH
@sheepmasterrace5 ай бұрын
Shouldn’t you times 2 because there are 2 moles of NaOH for every H3SO4? why isn’t this the case?
@OriganalSEX11 ай бұрын
professor shouldnt the first example oh H2SO4 + NaOH result with 2.784 M since the H2SO4 is diaprotic?
@endjess48574 жыл бұрын
Thank you for helping me understand this💕
@syedahmed31364 жыл бұрын
For NaoH concentration the volume should be (.0116+.025) L not .025L.
@cheddar60203 жыл бұрын
concentration before the titration.
@ruisir18 жыл бұрын
shouldn't it be 0.0696 mol base?
@ProfessorDaveExplains8 жыл бұрын
even though its a diprotic acid, the second proton is nowhere near as acidic as the first, so we are just looking at neutralizing the results of the first deprotonation.
@cheddar60203 жыл бұрын
@@ProfessorDaveExplains It's 98% as acidic and a balanced reaction will consider both protons.
@lanomusambazi86542 жыл бұрын
Thank you professor Daves
@IsaacAwad.043 жыл бұрын
Why i don't understand the will neutralizer 1:58
@Scr1ball7 ай бұрын
professor dave i’m in love with you
@diwakarpatel20512 жыл бұрын
Sir You are the best teacher
@crieliocriel2 жыл бұрын
i thought the ratio of naoh to h2so4 is 2:1.. from the equation..
@eliashospers41842 жыл бұрын
thank you master dave
@rassimsimou1594 Жыл бұрын
Good
@PartyRick253 жыл бұрын
Thanks Professor Dave!
@rainsmush3 жыл бұрын
pls make on Arrhenius,Bronstein and lewis concept literally need it
@ProfessorDaveExplains3 жыл бұрын
check my video on acids and bases
@estelamino63562 жыл бұрын
THANKS
@pagodnako Жыл бұрын
Thank you papa susej🙌🏻
@salvy2896 Жыл бұрын
Why 11.6ml ???
@sicilianotoronto5 жыл бұрын
I did M1V1 = M2V2, solved for M2, got the same answer.
@vatsalyatiwarii5 жыл бұрын
Thanks for the formula
@TheHHPodcast Жыл бұрын
should it not be 4 significant figures? the 165.0 had 4
@rylietaylor82086 жыл бұрын
You're my literal lord and savior thank you so much
@user-hu1gy2de2u3 жыл бұрын
I want to knowWhat are three attributes of a successful titrimetric analysis?
@boashoe5 ай бұрын
This man is saving my degree 😭
@atharyalajmi6706 жыл бұрын
you're a lifesaver
@omaralslamen6 жыл бұрын
Thank you But can u talk about neutralization titration Pls
@ZeonGenesis6 ай бұрын
I still can't fathom how we know when we reach an equivalence point with an indicator, all I get is we just make it change color.. ach.
@Antweezy5 жыл бұрын
Agh, the prof wants us to answer concentration of .1M NaOH (which is being titrated INTO KHP soln), how can we do this? It doesn't make sense to figure out M of NaOH instead of M of KHP.
@amnaataha4 жыл бұрын
1:35 why is the mol ratio for stoichemetry 1 to 1? Isn't it supposed to be 1:2
@jacipope82894 жыл бұрын
I'm not an expert by any means, so don't listen to closely to me, but I THINK it depends from substance to substance. The different solutes and solutions have different ratios. (Not 100% sure though, don't @ me if I'm wrong pls)
@willm30274 жыл бұрын
You don’t worry about coefficients in molarity. As long as you do Molarity = moles/ liters. If you solve molarity by m1v1= m2v2 then you do worry about coefficients. Don’t use the second method. You’ll be wrong.
@roxyta1826 жыл бұрын
Thank you!
@user-by9xx2rz5z Жыл бұрын
watching before my chemistry exam
@tushhaardesai4 жыл бұрын
Excellent
@harishbaghel72636 жыл бұрын
Sir I would like to ask as to why the graph of volume of base vs pH is a curve not a straight line??
@ProfessorDaveExplains6 жыл бұрын
logarithmic relationship!
@4m0d Жыл бұрын
EPIC VID PROFESSOR
@joelsksksk75003 жыл бұрын
Whats the different between acid-base titration and acidimetry?
@hrishirachchh1947 Жыл бұрын
Sir you are like ranbir kapoor.
@HargunKaurSandhuHargun5 ай бұрын
Bro what where did animal come from? 😂
@emlmm888 жыл бұрын
How many tags do you put on your videos? The quality of them is so often exceptional that something seems amiss.
@nawalzahra36124 жыл бұрын
You are so good 😊 thanku
@vicgervemarlang5181 Жыл бұрын
is the 3.0m H2SO4 the indicator?
@michaelmancano3 жыл бұрын
Brilliant
@imosdefinite2 жыл бұрын
On a titration curve, is base always on the x axis?
@MerlinsFury Жыл бұрын
Brother, the stoichiometric ratio is not 1:1 for NaOH and H2SO4...
@elianeshantalliendoenciso8572 Жыл бұрын
hi teacher , why 11.6??? please
@hephaestus5521 Жыл бұрын
Why is the conversion factor mol/1L why isnt it 22.4? Pls help
@ProfessorDaveExplains Жыл бұрын
That's for ideal gases.
@pullagurlayoganandreddy76832 жыл бұрын
wait.....how acid and base can be together they just react right!
@captaininsane18934 жыл бұрын
What topic are the calculations from that confused me slightly
@cloudwalker27304 жыл бұрын
When you try to find the point of inflection of the graph......
@chocolatestrawberry54913 жыл бұрын
yes!!!! calculus>chemistry
@earthtoaquila3 жыл бұрын
I get it but why is it that sometimes you change the volume of the acid to liters and sometimes you leave it as mLs? I googled a few of my practice questions and the way you do it here gives me a different answers than what I find online. Can M also be equal to mol/mL or only mol/L
@ProfessorDaveExplains3 жыл бұрын
M is mol/L, it's just that for certain calculations volumes in mL are ok
@shalomagutierrez57102 жыл бұрын
wow you look just like Nicholas Megalis
@mow7da77773 жыл бұрын
Easy and perfect - kuwait
@nhenry6218 жыл бұрын
Professor Dave, Do you have videos for biochemistry?
@ProfessorDaveExplains8 жыл бұрын
+Nicole Henry those will be coming soon! probably over the summer.
@nhenry6218 жыл бұрын
omgg yes please!!! i finish organic this semester and I am scared for biochem
@handsomemonkeyking52992 жыл бұрын
Wow.. So my university just stretched this simple concept out to a 45 minute explanation AND made it unnecessarily confusing.