Phenolphthalein ( feh-NOL(F)-thə-leen) is a chemical compound with the formula C20H14O4 and is often written as HIn, HPh, phph or simply Ph in shorthand notation. Phenolphthalein is often used as an indicator in acid–base titrations. For this application, it turns colorless in acidic solutions and pink in basic solutions. It belongs to the class of dyes known as phthalein dyes.
Phenolphthalein is slightly soluble in water and usually is dissolved in alcohols for use in experiments. It is a weak acid, which can lose H ions in solution. The nonionized phenolphthalein molecule is colorless and the double deprotonated phenolphthalein ion is fuchsia. Further loss of proton in higher pH occurs slowly and leads to a colorless form. Phenolphthalein ion in concentrated sulfuric acid is orange red due to sulfonation.
Orion
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A large and bright constellation on the equator, between thestars Aldebaran and Sirius. It contains a remarkable nebula visibleto the naked eye.The flaming glories of Orion's belt. E. Everett.
Orion meaning & definition 1 of Orion.
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Slang for attractive girl or guy.
Orions are sometimes arrogant but very yummy. Orions have a dreamy look and are total prince charmings. Make you melt.
Orion meaning & definition 2 of Orion.
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Someone who seems to be attracted to living in the middle of nowhere.
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An addiction to photoediting.
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Act of hating the sun.
Orion meaning & definition 3 of Orion.
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A green species on Star Trek and object of many fanboy erections due to the species' culture of selling their animalistic females as slaves. The later incarnation of Orions on Star Trek: Enterprise tried to make the species PC by claiming the males were slaves, and they failed miserably.
Orion meaning & definition 4 of Orion.
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A nature lover that also loves cats. Cannot lie or pollute to save his life. Has a very good memory and is very OCD and ADHD. Is kind and honest and not very popular.
Orion meaning & definition 5 of Orion.
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A famous constelation, Orions Belt ect.
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The best rock Insturmental track ever created, by Metallica.
Orion meaning & definition 6 of Orion.
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An instrumental by Metallica. The seventh song on their 1986 album, Master of Puppets.
It was Cliff Burton's favorite song, next to Master of Puppets.
This song pretty much shows that they can write some pretty sick riffs.Orion meaning & definition 7 of Orion.
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Space Pirate Ninja from the future. Well known badass, and conqueror. Very tough, hard to kill, and hardly ever gives up. Keeps a positive attitude, and doesnt
Orion meaning & definition 8 of Orion.
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A figure in greek mythology, a hunter of giants, and an avid [womanizer]. Also a [constellation].
Orion meaning & definition 9 of Orion.
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Practice management application that helps businesses handle cases, client records, accounting, docketing, contacts, payments, and more A software product by Orion Law Management Systems
Orion meaning & definition 10 of Orion.
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A giant and hunter who was changed into a constellation at his death.
Orion meaning & definition 11 of Orion.