Talk:Alkali

Untitled

Could someone (with knowledge) please fix the "Common Properties" section? It seems to have be sabotaged or incomplete... 144.131.128.204 23:38, 18 February 2006 (UTC)[reply]

Definition

Could the Alkali page be updated with a definition? I get properties of alkali materials but there is no defining characteristic. What defines alkalinity?

What is the actual DEFINITION of Alkali? I am CLUELESS to all this stuff and trying to learn. Thanks

This article is very unclear. Just what is an alkali? Is an alkali an alkali salt, a base, a basic salt? Is a basic salt an alkali salt, or vice versa? I plan to rewrite this article. --Chemicalinterest (talk) 14:41, 18 May 2010 (UTC)[reply]

Last Paragraph

I believe the last paragraph of this article is misleading. It implies that there is a scientific basis for ingesting alkaline water. I know of no valid, scientific studies that show that.

Also, machines that purport to produce alkaline or ionized water probably produce miniscule amounts of either.--216.153.130.249 15:22, 3 October 2006 (UTC)[reply]

The last paragraph seemed to have no scientific background. I believe it was more of a product plug than anything having basis for this page, hence its deletion. Kal1917 16:59, 23 October 2006 (UTC)yeah they are not defining it[reply]

REDIRECT [

e]] what where is the target page

Examples?!

This article is useless without examples of common foods fitting the description.-DMCer 08:47, 9 July 2007 (UTC)[reply]

Ammonia

Quote:

"bases that are not alkalis, such as ammonia, are sometimes erroneously referred to as alkaline."

I disagree with this. Ammonia is alkaline because ammonia solution has a pH greater than 7. Biscuittin (talk) 13:56, 27 June 2008 (UTC)[reply]

I think you've missed the entire point of the "Confusion between alkali and base" section. pH greater than 7 makes ammonia a base, not alkaline. In common usage, ammonia is often called alkaline but this is wrong. NH3 contains no alkali elements nor alkali earth elements, therefore is not an alkali. Mattisgoo (talk) 03:05, 4 December 2008 (UTC)[reply]

Alkalis as soluble bases is a widely used alternate definition. I don't think it should be considered wrong.129.94.222.24 (talk) 06:42, 12 April 2010 (UTC)[reply]

Alot of scientific geniuses here. Wish i was that clever lol 122.57.194.123 (talk) 07:52, 18 November 2008 (UTC)[reply]

So really, this is one of those logic things is it?

Alkalines are bases, Therefore all bases are alkaline? —Preceding unsigned comment added by 194.105.181.145 (talk) 16:34, 27 January 2009 (UTC)[reply]

alakiis a property an opsisite of an acid.thankyou —Preceding unsigned comment added by 86.11.3.99 (talk) 19:37, 17 March 2009 (UTC)[reply]

All alkalis are bases but not all bases are alkalis!! An alkali is just a soluable base, but not all bases are soluable, thus theres a separate word for it

Alkali vs Alkaloid

In relation to toxicity, what exactly is an alkali, and how does it compare to an Alkaloid? Glycoalkaloids?
Christopher, Salem, OR (talk) 12:24, 17 June 2010 (UTC)[reply]

Site of Importance/Tourism?

Does anyone know if Alkali Lake (Oregon) is generally open to the public, just as people would visit the Newberry National Volcanic Monument?
Christopher, Salem, OR (talk) 12:37, 17 June 2010 (UTC)[reply]

External links modified

Hello fellow Wikipedians,

I have just added archive links to one external link on Alkali. Please take a moment to review my edit. If necessary, add {{cbignore}} after the link to keep me from modifying it. Alternatively, you can add {{nobots|deny=InternetArchiveBot}} to keep me off the page altogether. I made the following changes:

Added archive https://web.archive.org/20130927115357/http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0029936.html to http://www.tiscali.co.uk/reference/encyclopaedia/hutchinson/m0029936.html

When you have finished reviewing my changes, please set the —^{cyberbot II}_{Talk to my owner:Online} 10:10, 25 August 2015 (UTC)[reply]

Common properties of alkalis and bases

"Alkalis are all Arrhenius bases, ones which form hydroxide ions (OH−) when dissolved in water. Common properties of alkaline aqueous solutions include: Moderately concentrated solutions (over 10−3 M) have a pH of 7.1 or greater. This means that they will turn phenolphthalein from colorless to pink."

This is not entierly correct. For a solutions of e.g. KOH we have

 [OH^-] = 10 mM   <=>  pOH = -log_10(10^(-3)) = 3

Thus pH = 14 - pOH = 11 (or greater). Phenolphathalein turns pink at pH 9 (and above).

Ankr2808 (talk) 10:57, 25 October 2020 (UTC)[reply]

Adequate distinction between bases and alkalis needed

Both articles need more detailed distinction between bases and alkalis. I have made some already below, and active editors may add on to the text to make it detailed.

All alkalis are inorganic bases (that are water-soluble) and but all bases are not alkalis.
Alkalis are metal hydroxides and metal oxides of Group IA and Group IIA of the Periodic Table whereas bases are substances that neutralize acids to form salts and water.
Non-alkali bases are of 2 types:
- Inorganic bases: They are always water-insoluble. E.g. copper oxide, ferrous oxide, ferric oxide, zinc carbonate, etc.
- Organic bases: They may or may not be water-soluble. E.g. pyridine, alkylamines, such as methylamine, imidazole, benzimidazole, histidine, guanidine, phosphazene bases, etc.

SassyGamer483 (talk) 06:32, 18 December 2021 (UTC)[reply]

Alkaline magma series

Alkaline magma series should be mentioned in this article somehow. Volcanoguy 16:55, 19 March 2024 (UTC)[reply]