Information AboutAnhydride |
| CATEGORIES ABOUT ANHYDRIDE | |
| chemical compounds | |
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For example: : 2 NaOH - H2O = Na2O : H2SO4 - H2O = SO3 Thus sodium oxide is an anhydride of sodium hydroxide, and sulfur trioxide is an anhydride of sulfuric acid. Compounds involved are often Acid s or Base s; in such cases, the anhydrides can be called Acid Anhydride s or Base Anhydride s. This doesn't imply that the anhydrides aren't themselves acids or bases; they are. But the more hydrated forms may be more familiar or convenient. "Anhydride" is sometimes used as a synonym for "acid anhydride". Following are two reactions, one with a typical acid and base, one with their anhydrides. The first one is more practical. : 2 NaOH (aq) + H2SO4 (aq) → Na2SO4 + 2H2O : Na2O (s) + SO3 (l) → Na2SO4 In organic chemistry, the compounds most commonly involved are Carboxylic Acid s. : 2 CH3COOH → (CH3CO)2O + H2O Anhydrides are typically more reactive than their corresponding acids, as they can react with water to form their corresponding acid. They often are good dehydrating agents. Acetic anhydride is useful in the acetylation of salicylic acid, as using acetic acid to do the reaction leaves water behind that can destroy the product, acetylsalicylic acid, or Aspirin . In biology, most of the High Energy Phosphate compounds are formed from the condensation of the Phosphate ion with a phosphorylated Sugar . The resulting Pyrophosphate bond is a classic anhydride bond. |
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