Acid Base Strength - Which Is Stronger?
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- เผยแพร่เมื่อ 20 ต.ค. 2024
- This acids and bases chemistry video provides a basic introduction into acid strength and base strength. It explains how to determine which acid is stronger given the Ka and PKa values of the acid. It also explains how to determine which acid is stronger by considering factors such as size, electronegativity, and stabilization of the conjugate base. In addition, it mentions how to determine which conjugate base is stronger based on the Ka of the conjugate acid. This video contains plenty of examples and practice problems.
Acids-Bases - Free Formula Sheet:
bit.ly/3NsE7aP
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Acids and Bases - Introduction:
• Acids and Bases - Basi...
The 7 Strong Acids to Memorize:
• How To Memorize The St...
Conjugate Acid-Base Pairs:
• Conjugate Acid Base Pa...
pH and pOH Calculations:
• pH, pOH, H3O+, OH-, Kw...
Estimate The pH Without a Calculator:
• How To Calculate The p...
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Autoionization of Water - Kw:
• AutoIonization of Wate...
Which Acid Is Stronger?
• Acid Base Strength - W...
Acidic, Basic, & Neutral Salts:
• Acidic, Basic, and Neu...
pH of Weak Acids:
• pH of Weak Acids and B...
Buffer Solutions:
• Buffer Solutions
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Polyprotic Acid Base Equilibria:
• Polyprotic Acid Base E...
Acid Base Titration Curves:
• Acid Base Titration Cu...
Acids and Bases - Practice Test:
• Acids and Bases Review...
Ksp - Molar Solubility & Ice Tables:
• Ksp - Molar Solubility...
Complex Ion Equilibria:
• Complex Ion Equilibria...
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Gibbs Free Energy, Entropy & Enthalpy:
• Gibbs Free Energy - En...
Entropy - 2nd Law of Thermodynamics:
• Entropy - 2nd Law of T...
Electrochemistry Practice Problems:
• Electrochemistry Pract...
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I'm gonna be tutor for general chemistry this coming fall semester and I'm going reviewing all the topics in GC. This video was great for practice. Thanks man
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Heyy this is a great video! Although I have a question. What if we aren't given a Ka value for the first question. Is there a way to identify which acid is stronger?
I really was googling this as well.
th-cam.com/video/v_94NsuBwDM/w-d-xo.html this helped me if anyone is still looking for a similar answer
What if Ka is not given?!!!!
There are certain trends for H-X acids with X being a very electronegative element, as well as H-O-X acids and H-(n)*O-X acids you just gotta memorize
Rick F lol, that’s not chemistry, it should compare stability and electronegativity
@@alexp2019 yeah that's what he's talking about in terms of trends
well, u remember the strong acids and the strong bases, then you know also bases and acids that have zero strength. The rest are weak acids, or base and to find out which one is a base or an acid: see which one gives protons and receive protons.
he goes over it in the video--
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1:50: important detail about oxy acids is that you need to look at the unprotonized O-Atoms in the molecule, so the actual number to estimate the Ka value is [number of O-Atoms in the molecule] - [number of H-Atoms in the molecule]
also you can roughly calculate the Ka value just by that number. just multiply the number of unprotonized O-atoms by 5 and subtract it from 8.
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I managed to get the first 8 questions correct.
8:01 True for *inorganic* acids; organic derivatives of these acids can also be strong, such as methanesulphonic acid.
Thank you very much. This is excellent.
which is weak?
HMnO4 or HNO3
And please give me the explanation. Thank You😊
HNO3
Very helpful .Thank you so much .
Thank you very much i really know now how i can Distinguish
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I was once confused because of absolute values, when here, the bigger the negative the smaller the number.
How we find Ka and Kb values??
What if I have to rate from strongest to weakest, but I have HCl, H2SO4, HBr, HNO3, CH3COOH? How do the trends work if I have both acid with and without O
Thank you
What about ranking these: water, nitrate, acetate (in ascending base strength)?
which acid is stronger sulfuric acid or Nitric acid
Thank you so much
For number 7 at 9:10 are HS- and NO2- the conjugate bases?
Yep!
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How do you know the Kb value??
for HIO and HBrO wouldnt the stronger acid still be HIO because the hydrogen is technically attached to the I not the oxygen??
I thought the same thing. Contradicted himself.
8:57 what if there's no ka or kb
What about H2SO4 and HNO3?
so helpful ong
Why Hf is the weakest acid ??
Because it's the toppest on a group so it's size will be small as compared to HCl, HBr, HI. It will be strongly bond to the hydrogen atom and thus it will not loose it's H+ easily which makes it a weak acid. Those below the group have weak overlaps because of large size of the X atom so they'll loose their H+ easily making them a strong acid.
What if ka is not given
You rock
What is the reason behind 6th question? Becoz I know HF is stronger than HCl due to it's high electronegativity
It's actually the opposite. HCl is one of the strong acids, HF isn't. The high electronegativity of fluoride holds on to the hydrogen more strongly, so that proton is less likely to dissociate -> its a weaker acid
I agree with BledWh1te. The strength of the acid could also be determined qualitatively by considering the relative stability of their respective conjugate bases. Using this perspective, HCl would be considered a stronger acid because Cl- would be more stable than F-. In this case, the larger the atom the more volume available to disperse the negative charge. This trend continues down the same period. F- < Cl- < Br- < I-. Hope this helps!
Cl is bigger than F so the bond between Cl-H is longer than the bond between F-H, and we know the longer the bond the weaker the bond so Cl lets go of it's Hydrogen much easier, and acidity is how readily an atom gives up its proton.
Higher electronegativity only wins when going across a row (moving left to right). But when in the same column/group, electronegativity doesn't win, atomic size does. So going down a group/column means greater acidity despite electronegativity becoming smaller. Reason: bigger atom=more surface area=spreads out negative charge better=more stable=more okay with letting go of that hydrogen.
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strengff
HF is a weak acid lol.
HF is stronger than HCl
If the weaker living are destroyed and vanished, what good and bad values go vanish with them. If we have the forced will to destroy the weak, we find a good reason. We had less emotional intelligence. Or i couldnt stand her dumb mind. Did she have got any strong values. She was dumb. In a good way. She saw equality in all living. She was good, best, bad and worst in the same person. She saw herself in all living. She was a weaker person. She was a living in this world, where all living are the same.
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Doesn't explain anything, just memorizing information... sad
There's not much to explain. This is a really easy concept. Be glad he's even making a video about it.
Yesss exactly I wanted an in depth video (˘･_･˘)
Thank you