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Superacids & Superbases<br />Done by: Cheng Wei Loon (4) 2A1<br />
What are superacids?<br />An acid (of course!)<br />Has an acidity greater than that of 100% pure sulfuric acid<br />It ha...
Hammett acidity function<br />A measure of acidity that is used for very concentrated solutions of strong acids, including...
Examples of superacids<br />
Fluoroantimonic acid<br />Mixture of hydrogen fluoride and antimony pentafluoride<br />Strongest known acid in the world<b...
Trifluoromethanesulfonic acid<br />Also known as triflic acid<br />One of the strongest acids<br />Colourless liquid at ro...
What are superbases?<br />An extremely strong base that is a compound which has a high affinity for protons<br />Can be ea...
Examples of superbases<br />
Hydroxide ion<br />Strongest base possible in aqueous solutions<br />Natural constituent of water<br />It acts as a base t...
Lithium diisopropylamide<br />Generally abbreviated LDA<br />Used for the deprotonation of weakly acidic compounds<br />Ch...
Bibliography<br />http://chemistryiit.blogspot.com/2008/11/super-acids-and-super-base-concepts.html<br />http://answers.ya...
Thank you!!!<br />
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Superacids & superbases (ace)

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Superacids & superbases (ace)

  1. 1. Superacids & Superbases<br />Done by: Cheng Wei Loon (4) 2A1<br />
  2. 2. What are superacids?<br />An acid (of course!)<br />Has an acidity greater than that of 100% pure sulfuric acid<br />It has a Hammett acidity function of -12<br />
  3. 3. Hammett acidity function<br />A measure of acidity that is used for very concentrated solutions of strong acids, including superacids<br />Proposed by the physical organic chemist Louis Plack Hammett<br />It can replace the pH in concentrated solutions of acids<br />
  4. 4. Examples of superacids<br />
  5. 5. Fluoroantimonic acid<br />Mixture of hydrogen fluoride and antimony pentafluoride<br />Strongest known acid in the world<br />Rapidly and explosively decomposed by water<br />Chemical formula: HSbF6<br />
  6. 6. Trifluoromethanesulfonic acid<br />Also known as triflic acid<br />One of the strongest acids<br />Colourless liquid at room temperature<br />Chemical formula: CF3SO3H<br />Causes severe eye burns and may cause blindness upon eye contact<br />
  7. 7. What are superbases?<br />An extremely strong base that is a compound which has a high affinity for protons<br />Can be easily destroyed by water, carbon dioxide and oxygen<br />Fundamental to physical organic chemistry<br />
  8. 8. Examples of superbases<br />
  9. 9. Hydroxide ion<br />Strongest base possible in aqueous solutions<br />Natural constituent of water<br />It acts as a base towards an acid<br />Chemical formula: OH−<br />
  10. 10. Lithium diisopropylamide<br />Generally abbreviated LDA<br />Used for the deprotonation of weakly acidic compounds<br />Chemical formula: [(CH3)2CH]2NLi<br />
  11. 11. Bibliography<br />http://chemistryiit.blogspot.com/2008/11/super-acids-and-super-base-concepts.html<br />http://answers.yahoo.com/question/index?qid=20080329055010AA36YXJ<br />http://en.wikipedia.org/wiki/Superbase<br />http://en.wikipedia.org/wiki/Superacid<br />
  12. 12. Thank you!!!<br />

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