Timeline for Why do we have to prevent the hydrolysis of iron(III) nitrate?
Current License: CC BY-SA 4.0
22 events
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| May 17, 2023 at 22:04 | history | edited | ananta | CC BY-SA 4.0 |
incorporated suggestions in comments
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| May 17, 2023 at 21:53 | comment | added | ananta | @Martin-マーチン sorry for the misunderstanding, I did look at it, but maybe I did not understand it fully. "The maximum number of univalent atoms (originally hydrogen or chlorine atoms) that may combine with an atom of the element under consideration, or with a fragment, or for which an atom of this element can be substituted." I also noticed that ferric hydride is unstable, but $\ce{FeCl3.xH2O}$ points to a valency of 3 for $\ce{Fe}$. | |
| May 17, 2023 at 21:47 | history | edited | ananta | CC BY-SA 4.0 |
incorporated suggestions in comments
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| May 17, 2023 at 20:55 | comment | added | Martin - マーチン♦ | I find your comment a bit insulting. Did you actually have a look at the definition I have linked to? There are only a few possibilities here: You did not, you did not understand it, or you disregarded it. Honestly I do not understand how your comments address any of the concern I raised. | |
| May 17, 2023 at 4:06 | history | edited | ananta | CC BY-SA 4.0 |
incorporated suggestions in comments
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| May 16, 2023 at 22:08 | comment | added | ananta | @Martin-マーチン $\ce{[Fe(OH2)_6]^{3+}}$ is a 17 electron complexes and, theoretically, should be (somewhat) oxidizing in nature. | |
| May 16, 2023 at 21:58 | comment | added | ananta | @Martin-マーチン how could we forget about $\ce{[Fe(CO)5]}$? This does show an example of $\ce{Fe}$ having a valency of 5, but the oxidation state of $\ce{Fe}$ is zero here. We need to consider the valency of $\ce{Fe^{3+}}$. | |
| May 16, 2023 at 21:49 | comment | added | Martin - マーチン♦ | Come to think of it: goldbook.iupac.org/terms/view/V06588 Valence for iron is not 6! That is the coordination number (most common). But that whole concept was stretched beyond the useful and is usually taught wrong in schools and textbooks… You might want to fix that, too. | |
| May 16, 2023 at 20:28 | history | edited | ananta | CC BY-SA 4.0 |
minor corrections and improved readability
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| May 16, 2023 at 19:44 | comment | added | Martin - マーチン♦ | I've gotten out the computer and tried to fix the MathJax. I'm pretty sure I didn't find everything though and there might be a bug with mhchem. Oh well… that's just life. Good luck with these kinds of posts. Btw. there is plenty of info on MthaJax on Chemistry Meta. | |
| May 16, 2023 at 19:43 | comment | added | ananta | @Martin-マーチン thank you for the revisions. I will keep these in mind when writing future posts. I also plan to edit my previous posts too, and I will keep these revisions in mind then as well. | |
| May 16, 2023 at 19:36 | history | edited | Martin - マーチン♦ | CC BY-SA 4.0 |
tried to fix formatting, especially MathJax, but probably wasn't enough
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| May 16, 2023 at 19:10 | comment | added | ananta | @Poutnik thank you. I have incorporated your suggestions. | |
| May 16, 2023 at 19:09 | history | edited | ananta | CC BY-SA 4.0 |
incorporated suggestions in comments, added remarks
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| May 16, 2023 at 10:00 | comment | added | Poutnik | No cit. available. Ferric ion start to hydrolyze even near pH 3-4. Hydroxide reportedly coagulates at pH 4.5 // Try searching for ferric ion hydrolysis. I do not have access to paywalled articles. // sciencedirect.com/topics/earth-and-planetary-sciences/… // pubs.acs.org/doi/10.1021/jp980229p // pubs.acs.org/doi/10.1021/ja01324a018 | |
| May 16, 2023 at 9:44 | history | edited | ananta | CC BY-SA 4.0 |
corrected link
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| May 16, 2023 at 9:40 | comment | added | ananta | @Poutnik sorry for the bother, but could you provide a citation... I want to know the $\mathrm{pH}$ at which these reactions occur, and if at all, mixing $\ce{Fe(NO3)3}\cdot 9H2O$ would form hydroxide complexes at a neutral $\mathrm{pH}$. $\ce{HO-}$ is a weaker field ligand than $\ce{H2O}$. | |
| May 16, 2023 at 9:34 | comment | added | Poutnik | $\ce{[Fe(H2O)_{6-n}(OH)_n]^{3-n}(aq) + H2O(l) <=> [Fe(H2O)_{5-n}(OH)_{n+1}]^{2-n}(aq) + H3O+(aq)}$ for $n=0..2$ $\ce{2 [Fe(H2O)3(OH)3](aq) <=> [Fe(H2O)3(OH)2-O-Fe(H2O)3(OH)2](aq) + H2O(l)}$ and further condensation... // the actual mechanism is complex and particular structures may be guesses. there would be also multiple parallel ways of simultaneous hydrolysis and condensation. | |
| May 16, 2023 at 9:25 | comment | added | ananta | @Poutnik I couldn't find many sources regarding hydrolysis of ferric nitrate. I assumed it meant hydration of ferric nitrate. Sometimes the water of hydration does deprotonate and ligate as hydroxide. Could you help a little here? | |
| May 16, 2023 at 9:14 | comment | added | Poutnik | It seems not to address ferric ions hydrolysis, but hydration isomerism. Sure, you could formally replace NO3- by OH-. | |
| May 16, 2023 at 7:54 | history | edited | ananta | CC BY-SA 4.0 |
minor corrections
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| May 16, 2023 at 7:31 | history | answered | ananta | CC BY-SA 4.0 |