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I just want to say you’re a very Genius man!! I got “B” grade in organic chemistry which was a real pain for me after God willing then by watching your lessons!!! You taught me more than my previous professors in chemistry department. So thank you and God bless you👏
Definitely worth you're weight several times over in gold. When I give up on my teachers you're videos remind me of the love I still have for the subject.
sending a massive thank you your way for helping me understand concepts that i seriously doubt i could have a grasp of otherwise. im currently in a chemistry II class and although i love chemistry very much i have a hard time grasping the concepts. your videos have been such a massive help to me through the last few years with both math and chemistry. you are amazing and i hope that you are having a lovely day/night
After so many years of following, admiring and learning, I am so blessed to be the first comment. You have inspired my own channel and I I am very thankfull for everything you have contribute for the science community. God Bless You!
Very helpful.. I am able to learn college thing in 10th grade... I really like your teaching. You are the cause of me learning calc 1 and trig in class 9. Thank ☺you so much
i just bought your membership today ! i have ochem summer session my first test is wednesday. you are saving my life just so you know ;) I just want to make sure im clear the WA will be more stable ?
For the last example in the video, the reaction between F- and CH3OH is reactant favored because the pKa of CH3OH is greater than HF (thus CH3OH is weaker acid). Why do we not consider pKb in determining which side is favored?
pKa and pKb are related: 14 = pKa + pKb. You can use either set or even a blend of pka and pkb values to determine the direction of the equilibrium. The smaller the pka, the greater the pkb, but since the conjugate pair is on the other side, your answer stays the same.
It's a year now😮...but I think we were given pka of the acid (Ch3OH) and it's conjugate acid (HF)....so I'm not sure there would be a need to be comparing the pkb of their conjugate bases....you might as well end up confusing your self...I was almost confused and had to refer back to the video ...I now realised what he was doing😂....I've gotten it now more clearer...but I think ...you can also reference to see it...thanks😊 25:40
Although there is an entropic factor in all reactions and phase changes, we also have to consider the energy stability. Entropy is relatively minor a lot of the time compared to enthalpy
@@paysonkeown2960 That makes sense. How can you tell if the reaction is reactant-favored or irreversible for the reactants? Does it depend on the strength of the acids?
@@mayflowerimpact that’s a good question. If I’m understanding you correctly, you can tell which way a reaction will go based on the strengths of the acids and bases on both sides. Take water and HCl reacting. When they react, you get H3O+ and Cl-. H3O+ is a weaker acid than HCl, and Cl- is a weaker base than water. Therefore, the reaction will rarely go in the reverse, making this almost completely go towards the product. Now take acetic acid and water. These make acetate and hydronium (H3O+). Acetate is a stronger base than water and hydronium is a stronger acid than acetic acid. Thus, the reaction will want to go to the reactants, making the K
My lectures are really making me hate my modules... They cover nothing.... I come back home to watch your videos that give me hope if not for your channel I would have quit university
In this process( HF + H2O ) becomes( F- + H3O +) and it is said to be a reversible reaction! Why does HF + H2O have to become F- + H3O + and reverse back to HF + H2O ? It can just not form F- + H3O !! Please reply 🙏 🙏🙏 I know it is a silly question but I just wanna know!!
because F- conjugate base of strong acid HF which will dissociate completely in water.therefore is no way for ths reaction to be reversible reaction.it's done in one direction.
What about the structure tells us which is the bronsted acid/ base? You don’t say why HF is acid or why NH3 is base. Please clarify, I would rather not have to memorize weak acids/ bases.
It depends on the reaction, but usually, bronsted acids have a proton that can easily be lost and bronsted bases have a site to take in that proton. However, it always depends on the reaction. For example, water is a bronsted base when with something like HCl but an acid when with something like methoxide(CH3O-).
@@MrChAcHa96 Yes but what makes them strong acids and strong bases? Is there a consistent rule that can be followed so that we can potentially understand what's going on?
@@noakuu393 actually chemists discovered them so you don’t need to mess your brain to understand properly what’s strong acid or not. But if you want the explanation is the following: take for example HI (pka-10) and HBr (pka-9) both strong acids, remind that stronger the acid weaker the conjugate base and more stable it is. Iodide(I-) it’s a bigger anion than Bromide (Br-) therefore it has more space to stabilise negative charge, and if you can stabilise a negative charge you can make the ion more stable which means a stronger acid. And because Iodide is more stable it doesn’t have a strong affinity for H+, therefore it’s a strong acid, it’ll ionize in H+ and I- Hope this satisfy your doubt
@@jizla9061 To start you would have to figure out which one is your acid and which one is your base. HNO3 is a strong acid but water has been known to act as either an acid or base. Since you have a strong acid present water would be the base in this situation. Hope that helps!
If I have a option to donate my college fees to you I choose it but in future I want to donate you something for help me in my college education thank whatever your name was literally just thank you sir
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I just want to say you’re a very Genius man!! I got “B” grade in organic chemistry which was a real pain for me after God willing then by watching your lessons!!! You taught me more than my previous professors in chemistry department. So thank you and God bless you👏
My tuition should go to you instead of school
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Definitely worth you're weight several times over in gold. When I give up on my teachers you're videos remind me of the love I still have for the subject.
After years of watching your videos, I’m finally getting to your organic chemistry stuff lol. Thanks for the content!!
sending a massive thank you your way for helping me understand concepts that i seriously doubt i could have a grasp of otherwise. im currently in a chemistry II class and although i love chemistry very much i have a hard time grasping the concepts. your videos have been such a massive help to me through the last few years with both math and chemistry. you are amazing and i hope that you are having a lovely day/night
Before i watch this, I'd like to say thank you so much! It's a big part of my journey. May God bless you always.
After so many years of following, admiring and learning, I am so blessed to be the first comment. You have inspired my own channel and I I am very thankfull for everything you have contribute for the science community. God Bless You!
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Very helpful.. I am able to learn college thing in 10th grade...
I really like your teaching. You are the cause of me learning calc 1 and trig in class 9.
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i just bought your membership today ! i have ochem summer session my first test is wednesday. you are saving my life just so you know ;) I just want to make sure im clear the WA will be more stable ?
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For the last example in the video, the reaction between F- and CH3OH is reactant favored because the pKa of CH3OH is greater than HF (thus CH3OH is weaker acid). Why do we not consider pKb in determining which side is favored?
pKa and pKb are related: 14 = pKa + pKb. You can use either set or even a blend of pka and pkb values to determine the direction of the equilibrium. The smaller the pka, the greater the pkb, but since the conjugate pair is on the other side, your answer stays the same.
It's a year now😮...but I think we were given pka of the acid (Ch3OH) and it's conjugate acid (HF)....so I'm not sure there would be a need to be comparing the pkb of their conjugate bases....you might as well end up confusing your self...I was almost confused and had to refer back to the video ...I now realised what he was doing😂....I've gotten it now more clearer...but I think ...you can also reference to see it...thanks😊 25:40
My tuition should go to you instead of my school😂❤❤
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Amazing
At 25:45- why did B become -1. Shouldn’t B be -2 as it has 5 Ve’s (in BH3) and should have 3?
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28:18 Doesn't the universe tend towards disorder and entropy? If so, shouldn't the reaction go towards the unstable side?
Although there is an entropic factor in all reactions and phase changes, we also have to consider the energy stability. Entropy is relatively minor a lot of the time compared to enthalpy
@@paysonkeown2960 That makes sense. How can you tell if the reaction is reactant-favored or irreversible for the reactants? Does it depend on the strength of the acids?
@@mayflowerimpact that’s a good question. If I’m understanding you correctly, you can tell which way a reaction will go based on the strengths of the acids and bases on both sides.
Take water and HCl reacting. When they react, you get H3O+ and Cl-. H3O+ is a weaker acid than HCl, and Cl- is a weaker base than water. Therefore, the reaction will rarely go in the reverse, making this almost completely go towards the product.
Now take acetic acid and water. These make acetate and hydronium (H3O+). Acetate is a stronger base than water and hydronium is a stronger acid than acetic acid. Thus, the reaction will want to go to the reactants, making the K
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My lectures are really making me hate my modules... They cover nothing.... I come back home to watch your videos that give me hope if not for your channel I would have quit university
Yay I can just watch this for my exams instead of reading the book
Same
same here
In this process( HF + H2O ) becomes( F- + H3O +) and it is said to be a reversible reaction!
Why does HF + H2O have to become F- + H3O + and reverse back to HF + H2O ?
It can just not form F- + H3O !!
Please reply 🙏 🙏🙏
I know it is a silly question but I just wanna know!!
because F- conjugate base of strong acid HF which will dissociate completely in water.therefore is no way for ths reaction to be reversible reaction.it's done in one direction.
HF is not strong @@hakimalaourai276
What about the structure tells us which is the bronsted acid/ base? You don’t say why HF is acid or why NH3 is base. Please clarify, I would rather not have to memorize weak acids/ bases.
It depends on the reaction, but usually, bronsted acids have a proton that can easily be lost and bronsted bases have a site to take in that proton.
However, it always depends on the reaction. For example, water is a bronsted base when with something like HCl but an acid when with something like methoxide(CH3O-).
MY ANGELLL
So I'm having a problem. How do I know which acid is stronger without a given pka or ka.
basic strong acids: HCl, HBr, HI, HNO3, H2SO4, HClO4, HClO3 basic weak acids: HF, NH4, CH3COOH, H2CO3, HNO2, H2SO3 you should memorize all of them
@@MrChAcHa96 Yes but what makes them strong acids and strong bases? Is there a consistent rule that can be followed so that we can potentially understand what's going on?
@@noakuu393 actually chemists discovered them so you don’t need to mess your brain to understand properly what’s strong acid or not. But if you want the explanation is the following: take for example HI (pka-10) and HBr (pka-9) both strong acids, remind that stronger the acid weaker the conjugate base and more stable it is. Iodide(I-) it’s a bigger anion than Bromide (Br-) therefore it has more space to stabilise negative charge, and if you can stabilise a negative charge you can make the ion more stable which means a stronger acid. And because Iodide is more stable it doesn’t have a strong affinity for H+, therefore it’s a strong acid, it’ll ionize in H+ and I-
Hope this satisfy your doubt
@@MrChAcHa96 Question what if its HNO3 + H20--->
@@jizla9061 To start you would have to figure out which one is your acid and which one is your base. HNO3 is a strong acid but water has been known to act as either an acid or base. Since you have a strong acid present water would be the base in this situation. Hope that helps!
What is the meaning of pa?
I came here just to like the video
Even UNACADEMY doesn't have this much subscribers 😂
What it's something like HNO3 + H20--->
Wdym?
you didn’t explain why HF was the acid and why h2o was the base
He quite literally did
Acid pH value is less than 7 and pH value of base greater than 7
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If I have a option to donate my college fees to you I choose it but in future I want to donate you something for help me in my college education thank whatever your name was literally just thank you sir
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