Systematic Treatment of Equilibrium
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- เผยแพร่เมื่อ 16 มิ.ย. 2024
- Chad works an example of the Systematic Treatment of Equilibrium to determine the molar solubility of Zn(CN)2 at pH 1.5 going over how to determine both the charge balance and mass balance equations.
Thank you so much for this video. I was incredibly confused while reading this section of my QA textbook, but now I feel that I have a better grasp on how to solve these problems.
A suggestion: I've noticed that there is a distinct lack of writing mass balance/charge balance videos on youtube, and I think they're needed; writing out the pertinent equilibria and then the mass/charge balance expressions is pretty difficult imo. You'd be the perfect person to teach it! Thanks again for the help.
Glad you found this video helpful Dani! I actually made it in response to another student's question as I didn't have a single video on it in any of my playlists. And I do hope to make some additional videos on the topic down the road, but now I've got my hands full making a new ochem playlist (a remake technically) and making my first ever high school chemistry playlist. But a new set of Biochemistry lectures is on the horizon and then I'll have some decisions to make. But analytical and physical chemistry playlists have been on my mind for awhile...
Happy Studying!
I love this video. There are very few TH-cam videos about systematic treatment and you covered it so nicely. Many thanks
You're welcome and Thank You!
Super helpful video, been looking for a video on this topic for a while, and you have done the best job explaining it by far.
Glad to hear it, Tommy!
awesome video! The clearest explanation I've found sound far!
Thanks Jason! Glad you found it helpful! Based upon suggestions I plan to make a couple more involving a couple more examples.🙂
This was very helpful and I love your shirt! Thank you!
You are welcome, Molly - thanks for commenting!
Thank you for this !
You are welcome - glad the video was useful!
Awesome!
Glad you think so!
The 2Zn its because is an algebraic fix, exist the double of quantity of CN compared to Zn.
Thank you so much for this video! If the acid was polyprotic how would the method change?
The method wouldn't change but you would have more terms in the mass balance and charge balance equations and you would have additional Ka expressions. For example if you had 0.1M H3PO4 then your mass balance would be
[H3PO4] + [H2PO4^-] + [HPO4^2-] + [PO4^3-] = 0.1M
And those last 3 terms involve ions and would also appear in the charge balance as well.
I do mean to add a couple more examples in the future but in the meantime Hope this helps!
@@ChadsPrep Thank you so much! That was very helpful!
Which chemical solution clean black mercury II sulfide (metacaniber) pigment.
Thin metacaniber layer coating on paper.
How to clean that pigment on paper
Grazie
Welcome Mohammed!
Sir, In a systematic treatment of equillibrium of a monoprotic acid, what species can be ignored? what species can be ignored in diprotic acid??????
Sir please reply
Hello civilpaedia!
For a monoprotic acid you might not be ignoring any of the species. Since it is an acid it is likely that [H3O+] > [OH-] and perhaps ignoring the [OH-] in the charge balance equation could be helpful depending upon what initial information is provided.
For diprotic acid you didn't state if it was strong (like H2SO4) or weak (like H2SO3). I will assume it is weak and will use the example of H2SO3 specifically. Since weak acids only dissociate to a small extent we could make the following generalization:
[H2SO3] >> [HSO3-] >> [SO3^2-]
This means that in the mass balance equation almost all of the H2SO3 will still be in the form of [H2SO3] i.e. most of it undissociated as we could ignore [HSO3-] and [SO3^2-] in that equation.
Again, as in the previous example, since it is an acid it is likely that [H3O+] > [OH-] and perhaps ignoring the [OH-] in the charge balance equation could be helpful depending upon what initial information is provided.
Let me know if this helps!
@@ChadsPrep thanks sir it is helpful
You look like that Mr. Clean Guy
Ha! You got that right, Anthony!
kindly sir.. must upload mathematical form of ( relationships between K and delta S)
While I don't have a video on the relationship between K and delta S I do have videos on the relationship between K and dela G and between K and delta H (Clapeyron and Clausius-Clapeyron equations). But I don't have them yet on youtube, but you find an entire course on an elementary thermodynamics course here: www.chadsprep.com/chads-elementary-physical-chemistry-videos/
Happy Studying!
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Excellent!