Acid Base Titration Curves - pH Calculations
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- เผยแพร่เมื่อ 26 มี.ค. 2021
- This chemistry video tutorial provides a basic introduction to acid base titrations. It shows you how to calculate the unknown concentration of an acid solution and how to determine the volume of base added to completely neutralize the acid and to reach the equivalence point. It also explains how to calculate the pH of acid base titrations before, at and beyond the equivalence point. This video contains plenty of examples, equations, formulas, and practice problems.
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i opened my book and was looking at all those titration curves and feeling so hopeless..thankyou A LOT for this video. Literally saved a life
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13:55 starts weak acid and strong base titration.
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Andres Salazar
College Chem here!
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So for titration can you use HH equation at Eq point. Not clear. Please explain. Thanks
Thnaks
How do you figure out the charges?
26:37 shouldn't the 50mL be at .05L , since the molarity units are simply just mol/L?
It gets always talked about the addition of a strong acid or strong base... my question would be how to calculate the ph with the addition of a weak acid? Lets say the addition of acetic acid to a phosphate buffer
10:41 acid base titration curve
Thank you I was confused in lab last week
May l know why the Ka of a WA-SB titration is 10^-pKa.
Love you OCT
If HA is determining the pH by dissociating to H+ and A-...then why would you write A- as the base since if that concentration is high, H+ is high...ergo the pH will drop. in HA form...the H+ drops so the pH increases.
why do we use mols for ICE table here and not molarity??
5:24 I still can’t understand why we considered the hydrogen protons and the hydroxyde ions in the equation!! Why not just simply use the ratio which will be M1V1 = 2M2V2 (it is completely the opposite)
I’m a chemistry graduate and as far as I can remember and practiced we did that
Can you please help ASAP!
Tnx
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Iam asking myself why for question no2 the two ways does not give the same answer as well?
The molarity of the sulfuric acid would be rounded to 0.17M since the 0.25M NaOH gives you the least number of significant figures.
Watching you from Monk square
can someone pls answer my question ? which has lower ph nh4cl or h2s03 ? i googled it and nh4cl is 4.6-6.0 and h2so3 is 5.1 . this question came up on the exam that the whole country took . we never studied if the acidic salt had a lower ph than a week acid or the other way around. most teachers said the two answers should be correct but the ministry of education (who wrote the exam) said no theres only one correct answer and im dying to know which one it is.
if NH4Cl has a pH of 4.6-6.0 then that must be more acidic and of lower pH according to the pH scale. also H2SO3 is a weak acid soooo it’ll have a higher pH compared to NH4Cl. idk if i helped tbh😭
nh4cl
How to calculate high pH and low pH? Plz help
At 15:49 shouldn't the conjugate of a weak acid be a strong base?
it could be a weak base as well
Why cant we access the full 2 hour video?
Or can someone tell me how to access that full video?
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What
@@mohamadparadox2453 were you high
the man himself replyed to me
What I don't understand is, if you have 1 Mole of H2SO4 and 2 Moles of NaOH, then don't you already have a 1to1 ratio of H from the H2SO4 and the OH from the NaOH?
Its a 2:1 ratio because the 2 H+ ions in one H2SO4 molecule is available to react with the 1 OH- ion in NaOH
hod did you get 2 M1V1 and 1 M2V2??
@theorganicchemestery Hey anyone her can help. When you do the experiment you have 2 volumes for let say your acid. Which volume you should use for the calculations
i think limiting reagent works fine
@ 1:50, how it does H2 & OH make H2O? I thought it would be H3O
sulfuric acid is diprotic, so it releases 2 H+ ions but it can only do one at a time. so one H from H2SO4 will go to OH, create H20. then HSO4- will go to OH, create a second H2O molecule
Watching from Antarctica
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For Question 1: Why did we put the 2 on the side of the acid even though on the balanced equation the 2 is on NaoH not on H2SO4
The n factor for H2SO4 is 2 i.e., this acid gives 2 H+ ions in the reaction
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how did he know the volume of the equivalence point was 100 mL? at 33:55
From part (a) of the question
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What if instead of moles, grams are used?
convert grams into moles
🐐
why is graph asymptotic at ph=13?
Its asymptomatic because pH
16:12 ill be back
Watching from mars
What diprotic species
7:40
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Guys is this lectures are helpful for neet or jee preparation???
Anyone pls rply
Obviously
@@AnuragGupta-ov8dz Thanks for your reply brother 😊
He sounds ever so faintly like Mark Wahlberg
The second formula is simple
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3 hours late..
My professor doesn't let us use M1V1=M2V2 :(
2nd?
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Evidence
Must be my computer....My audio is set on the loudest....but I cant hear him :-(
it's actually really low. Mine too. but can be heard when max volume
dilution is the absolute wrong way to solve these questions. A titration is a chemical reaction and requires stoichiometry and a mole ratio. A dilution is the change in molarity of a single solution where volume changes. Stick with the stoichiometry and use a mole ratio. The goal is not be to just get the answer but to understand the process. And maybe try to not have a cheating site as an ad.
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