|
Search over 100 encyclopedias and dictionaries: |
Research categories | Follow us on Twitter |
Research categories
View all topics in the newsView all reference sources at Encyclopedia.com |
|||
hydroxide
hydroxide , chemical compound that contains the hydroxyl (-OH) radical . The term refers especially to inorganic compounds. Organic compounds that have the hydroxyl radical as a functional group are called alcohols ; the hydroxyl radical is also present in the carboxyl group of organic acids. Most metal hydroxides are bases—they form solutions that have an excess of OH - ions and a p H greater than 7, neutralize acids, and change the color of litmus from red to blue. Alkali metal hydroxides such as sodium hydroxide are strong bases and are very soluble in water; alkaline–earth metal hydroxides such as calcium hydroxide (slaked lime) are much less soluble in water and are not as strongly basic. Magnesium hydroxide ( milk of magnesia ) is only slightly basic. Some hydroxides (e.g., aluminum hydroxide) exhibit amphoterism , having either acidic or basic properties depending on the reaction in which they are involved. The hydroxides of some nonmetallic elements are acidic; the hydroxide of sulfur, S(OH) 6 , spontaneously loses two molecules of water to form sulfuric acid, H 2 SO 4 . Ammonium hydroxide, NH 4 OH, is a weak base known only in the solution that is formed when the gas ammonia , NH 3 , dissolves in water. |
|
|
Cite this article
"hydroxide." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "hydroxide." The Columbia Encyclopedia, 6th ed.. 2011. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1E1-hydroxid.html "hydroxide." The Columbia Encyclopedia, 6th ed.. 2011. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1E1-hydroxid.html |
|
hydroxide
hydroxide Inorganic chemical compound containing the group –OH, which acts as a base. Household ammonia is an example. The strong inorganic bases such as potassium hydroxide (KOH) dissociate (break down) in water almost completely to provide many hydroxyl ions.
|
|
|
Cite this article
"hydroxide." World Encyclopedia. 2005. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "hydroxide." World Encyclopedia. 2005. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O142-hydroxide.html "hydroxide." World Encyclopedia. 2005. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O142-hydroxide.html |
|
hydroxide
hy·drox·ide / hīˈdräkˌsīd/ • n. Chem. a compound of a metal with the hydroxide ion OH− (as in many alkalis) or the group −OH. |
|
|
Cite this article
"hydroxide." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "hydroxide." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O999-hydroxide.html "hydroxide." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-hydroxide.html |
|
hydroxide
hydroxide
•backside, trackside
•bedside • airside
•Tayside, wayside
•lakeside • stateside • graveside
•quayside, seaside, Teesside
•beachside • hillside • ringside
•suicide • herbicide • regicide
•fungicide • filicide • Barmecide
•homicide
•germicide, spermicide
•tyrannicide • parricide
•fratricide, matricide, patricide
•uxoricide • countryside • infanticide
•insecticide • pesticide • parasiticide
•mountainside • Merseyside
•Tyneside
•dioxide, dockside, hydroxide, monoxide, oxide, peroxide
•alongside
•diopside, topside
•broadside • downside • roadside
•poolside • upside • nearside
•fireside • Humberside • underside
•genocide • waterside • riverside
•silverside • overside
•kerbside (US curbside) • Burnside
|
|
|
Cite this article
"hydroxide." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. 26 May. 2012 <http://www.encyclopedia.com>. "hydroxide." Oxford Dictionary of Rhymes. 2007. Encyclopedia.com. (May 26, 2012). http://www.encyclopedia.com/doc/1O233-hydroxide.html "hydroxide." Oxford Dictionary of Rhymes. 2007. Retrieved May 26, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O233-hydroxide.html |
|
|
Search over 100 encyclopedias and dictionaries:
HighBeam™ Research, Inc. © Copyright 2012. All rights reserved.
The Encyclopedia.com advertising network includes:
