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Dab tsi ua haujlwm pab pawg tsis muaj tshuaj aspirin?
Dab tsi ua haujlwm pab pawg tsis muaj tshuaj aspirin?

Video: Dab tsi ua haujlwm pab pawg tsis muaj tshuaj aspirin?

Video: Dab tsi ua haujlwm pab pawg tsis muaj tshuaj aspirin?
Video: 8 yam tsis txhob ua thaum sib deev tag tsis li yuav phom sij txog lub neej txoj sia. 2024, Tej zaum
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Aspirin (acetylsalicylic acid) yog ib qho tshuaj tsw qab muaj ob qho tib si carboxylic acid pab pawg ua haujlwm thiab ester pab pawg ua haujlwm.

Ib yam li ntawd, koj tuaj yeem nug, cov pab pawg ua haujlwm dab tsi muaj cov tshuaj aspirin?

Muaj peb pawg ua haujlwm pom muaj nyob hauv cov tshuaj aspirin:

  • Carboxylic acid muaj cov pab pawg carbonyl (CO) thiab pab pawg hydroxyl (OH). Nws tseem hu ua pawg R-COOH.
  • Ester muaj cov pab pawg carbonyl (CO) khi rau cov pa oxygen.
  • Cov tshuaj tsw qab (benzene) yog lub nplhaib uas koj pom hauv cov tshuaj aspirin.

Cov pab pawg twg ua haujlwm tau pom hauv cov tshuaj aspirin uas tsis pom muaj nyob hauv salicylic acid? Cov qauv zoo sib xws. Lawv ob leeg muaj lub nplhaib benzene nqa ob pawg, ntawm cov pa roj carbon atoms uas nyob ib sab. Nyob rau hauv ob qho tib si ntawm lawv ib pawg yog ib carboxylic acid pab pawg Tab sis, salicylic acid nqa ib pawg phenol thaum cov tshuaj aspirin tsis.

Ua raws li qhov no hauv kev txiav txim siab, puas yog cov tshuaj aspirin puas muaj cov cawv ua haujlwm?

acetylsalicylic acid, tam sim no hu ua tshuaj aspirin thiab yog qhia hauv qab no (sab laug), nyob ib sab ntawm cov qauv rau salicylic acid (center). Nco ntsoov tias salicylic acid muaj ib qho organic acid pab pawg ua haujlwm ,a ib cawv pawg , ntawm ib lub nplhaib uas muaj ntxhiab hydrocarbon.

Cov tshuaj aspirin puas muaj phenol pab pawg?

Salicylic acid muaj a phenol pawg , thiab phenols paub tias yog khaus. Aspirin tuaj yeem ua los ntawm kev ua haujlwm ntawm salicylic acid nrog acetic acid nyob rau hauv muaj cov kua qaub catalyst. Cov phenol pawg ntawm salicylic acid tsim ib qho ester nrog carboxyl pab pawg ntawm acetic acid.

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