Talk:Ammonia solution

Untitled

It's a valid topic, just needs someone to provide something useful Rjstott 11:39, 29 Mar 2004 (UTC)

Grammar

is it okay if we change the first paragraph a little?

"However, this term does give a fair description of how an ammonia solution behaves, and is commonly used even by scientists and engineers."

could be:

"The term aqueous ammonia gives a fair description of how an ammonia solution reacts to form ammonium cations & hydroxide anions when ammonia is introduced to water; furthermore it is still present in Scientific and Engineering lexica."

please review and submit your thoughts, thank you! --Pillowmurder (talk) 19:02, 1 November 2008 (UTC)

Production?

What is the production of this? I mean, it isn't that hard to mix this with carbon dioxide to make ammonium carbonate, but hey! What's this made of?

From Curious scientist ^{https://en.wiki.x.io/wiki/Ammonium_carbonate}. (Up there is the link to Ammonium Carbonate in wikapediea)

Why NH4OH, not NH5O??

Why can't we write it as NH5O rather than NH4OH?? 66.32.118.139 23:22, 13 Apr 2004 (UTC)

"Functional groups" are often left as-is when writing chemical formulas. The ammonium group and the hydroxide group are well-known, and it's important to emphasize their presence. Another example is HC2H3O2, where the initial H isn't just used to give H a subscript of 4, but left separate to indicate that it'll ionize giving H+ and C2H3O2-. Yath 01:25, 14 Apr 2004 (UTC)

pH calculation

I looked at the "(equivalent to a pH of 11.63)" based on a pKb of 1.8×10^-5, and did the calculation myself.

At a pKb of 1.8x10^-5, the pOH should be: -log(1.8x10^-5) = 4.74.

Then, pH = 14-pOH, so 14-4.74 = 9.2552.

Am I missing something in my calculations? —The preceding unsigned comment was added by Savonnn (talk • contribs) 01:12, 7 May 2007 (UTC).

Yep! pOH = pK_b only if you have equal concentrations of unprotonated and protonated base. Hence a solution which contains equal concentrations of NH₃ and NH₄⁺ will have a pH of 9.25. A 1 M solution of ammonia which has no added acid has a pH which is higher, roughly 11.6. See also Buffer solution, weak base. Physchim62 (talk) 15:31, 7 May 2007 (UTC)

molecular info table

Could someone add the table about ammonium hydroxide like the one on ammonia on the right side of the page. thanks Ihafez (talk) 16:16, 5 October 2009 (UTC)

Chembox

I added the Chembox, which I built in the Portuguese wikipedia using the structure of the Hungarian chembox and the words from the French chembox. Probably there are few data that must be trimmed. Albmont (talk) 12:14, 14 January 2010 (UTC)

Looks good, could you help with a translation of the text in .. Portuguese to English? I'll try to add more identifiers in a bit (my script should be on its way there). I also verified the CAS number with CAS. Thanks! --Dirk Beetstra ^{T C} 12:52, 14 January 2010 (UTC)

What was left was Hungarian, not Portuguese. Maybe I can get something more with the other interwikis (French, Italian, Spanish - languages I can read quite well - and German and Dutch - languagen I'm not totally unfamiliar). But Hungarian is challenging even to language specialists - it's not even Indo-European! Albmont (talk) 18:22, 14 January 2010 (UTC)

Chembox / MP and BP

In the chembox the data for MP and BP has a reference. But the reference, as far as I can see, does not contain the data. The melting and boiling point are not explained in the text. Does the solid contain NH
₃ and H
₂O or does it really contain NH
₄OH? And the same for the boiling point. Encyclopedia of Inorganic Chemistry 2ed (Wiley, 2005), Nitrogen: Inorganic Chemistry, p. 12 says: "Ammonium hydroxide NH⁺
₄OH⁻
is only found dissociated in solution, the undissociated form does not exist.". Christian75 15:59, 14 February 2010 (UTC)

The data can be found by clicking on the "Phys.-Chem. Eigenschaften" link on the reference. The values are not explained in the reference, but I would assume the boiling point figures are the temperature at which the vapour pressure of ammonia reaches 1 atm. As far as I know, water and ammonia do not form a constant boiling mixture (unlike water and hydrogen chloride, for example). The solid will be NH
₃ and H
₂O in some sort of hydrogen bonded array but, again, I don't have any firm information. Physchim62 (talk) 16:21, 14 February 2010 (UTC)

Thanks, found the data. But it sounds strange to have a melting point for a compound which does not exist. (Its like saying that the melting point for AuF
₇ is equal the melting point for AuF
₅·F
₂) Christian75 19:06, 14 February 2010 (UTC)

Just a Thought

I'm just wondering, but when, on the talk page, you write a chemical formula, why do you write it incorrectly? I'm not trying to provoke anyone, I'm just curious as to why this is a common problem. For example, in the second section's name, the author wrote "Why NH4OH?", but the correct formatting would be "Why NH₄OH?" This is correct format for chemical formulas. Again, it's just a thought, so if you want to make an argument about it, then it's your loss, not mine.

--Mast3rlinkx (talk) 21:37, 24 March 2010 (UTC)

18:47, 18 December 2010 (UTC) ProfMad. Fair Comment! In my defense I don't know how to make the numbers smaller (ahhh! change fonts). Thus, firstly ignorance,& 2)continuation of said = sloth. Do I speak for the masses here??? 18:47, 18 December 2010 (UTC)ProfMad18:47, 18 December 2010 (UTC) — Preceding unsigned comment added by Profmad (talk • contribs)

Title of the article

Ammonium hydroxide is commonly used but it doesn't seem to be an accurate name. There is only a small fraction of ammonium ions and hydroxide ions in NH3(aq). I think ammonia solution is more appropriate as the title. In google, "ammonium hydroxide" and "ammonia solution" have similar popularity. Both of them have more than 600,000 links. In that case, the more chemically accurate name is probably more desirable.218.215.13.102 (talk) —Preceding undated comment added 15:40, 23 March 2011 (UTC).

McDonald's

I think it would be good to expand the section about processing meat. Why it's used, how wide is it's use, do BK and Wendy's use it, is it in supermarket products? http://www.cbsnews.com/8301-505269_162-57368078/mcdonalds-scraps-controversial-beef-process/ Flight Risk (talk) 05:31, 31 January 2012 (UTC)

Why not H3OOH?

Why don't we create an article about H3OOH as well, guys?? With exactly the same reasoning as in the archived peer review, that aqueous ammonia does contain some (indeed only some) NH4+ and OH- ions and should/could thus be called ammonium hydroxide, well then I advocate that we should start calling water hydronium/oxonium hydroxide as well... dûh! Should Wikipedia really promote ignorance? Beryllium-9 (talk) 10:49, 29 February 2012 (UTC) As a corollary, the least we should do is to call this article "Aqueous ammonia" and redirect Ammonium hydroxide to Aqueous ammonia. Can someone fix this? Beryllium-9 (talk) 10:55, 29 February 2012 (UTC)

Stoichiometry?

What we see is formulations like "a 3:1 mixture of ammonium hydroxide (NH4OH) with hydrogen peroxide" (from article on Piranha solution). What does this say about stoichiometry? This suggests that "ammonium hydroxide" (NH4OH) should be used (if at all) only if it is really about ammonia (NH3) and water (H2O) in a 1:1 ratio, right? Beryllium-9 (talk) 10:58, 29 February 2012 (UTC)

Ammonium hydroxide gas - what is that ?

The article about "pink slime" ( some kind of processed beef residue ) refers to it being processed with ammonium hydroxide gas to kill germs. What exactly is ammonium hydroxide gas supposed to be ?? A mixture of steam and ammonia ? Or something else ?Eregli bob (talk) 18:21, 10 July 2012 (UTC)

People get confused about ammonia. Old fashioned and lay writings often refer to aqueous ammonia as ammonium hydroxide. The problem in pink slime was corrected.--Smokefoot (talk) 02:05, 11 July 2012 (UTC)

Basicity of ammonia in water

I think the number, 1.42% in that section should be 0.42%. Check:

  0.0042^2 = 0.000018, the dissociation constant  — Preceding unsigned comment added by 212.60.196.82 (talk) 04:14, 24 October 2016 (UTC) 

I second this - shall be 0.42%, not 1.42% — Preceding unsigned comment added by 46.188.11.41 (talk) 21:15, 3 October 2017 (UTC)

Application

• I suggest adding diazo printing (Whiteprint) in the applications section. --Dystopos (talk)

Furniture darkening

The last sentence in Furniture Darkening makes no sense. Roentie (talk) 12:51, 12 December 2018 (UTC)

How ammonia cuts grease

This section is missing any information about why ammonia is in cleaners. Comfr (talk) 01:45, 20 August 2019 (UTC)

We need 2D-skeletal with proper angles of ammonium hydroxide.

Thank you! --0dorkmann (talk) 07:31, 21 March 2023 (UTC)

Well, the compound does not exist, so its probably not worth fretting about. Ammonium article has a nice picture of the cation. --Smokefoot (talk) 13:35, 21 March 2023 (UTC)

Thank you! I was looking at the wrong article. --0dorkmann (talk) 02:58, 22 March 2023 (UTC)

I always get a database error when I try to add Ammonium to the see also section

The following discussion is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.

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If anyone could add this on my behalf that would be great. 👍 H44dyss9900 (talk) 17:04, 4 December 2023 (UTC)

This is no longer relevant, the issue is fixed H44dyss9900 (talk) 12:25, 4 October 2024 (UTC)

The discussion above is closed. Please do not modify it. Subsequent comments should be made on the appropriate discussion page. No further edits should be made to this discussion.