Video: Pawg ua haujlwm twg yog lub hauv paus tsis muaj zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Amines , ib qho nruab nrab nitrogen nrog peb daim ntawv cog lus rau lwm cov atoms (feem ntau yog carbon lossis hydrogen), yog cov pab pawg ua haujlwm zoo hauv cov organic tsis muaj zog hauv paus.
Ib yam li ntawd, tej zaum koj yuav nug, pab pawg twg ua haujlwm ua lub hauv paus tsis muaj zog?
Amines
Tsis tas li ntawd, puas yog amine lub hauv paus tsis muaj zog? Amines , tshwj tsis yog lawv muaj plaub R- pab pawg txuas nrog (ib lub quaternary amine ) muaj ib khub ntawm electrons, uas ib yam li ib leeg ib khub hauv ammonia, tuaj yeem txais tau ib qho proton. Li no amines , zoo li ammonia, yog tsis muaj zog hauv paus . Carboxylic acids biochemistry qaug zog kua qaub.
Xav txog qhov no, cov pab pawg twg tuaj yeem ua lub hauv paus?
Amino pab pawg tau kuj ua raws li hauv paus , uas txhais tau hais tias cov nitrogen atom ua tau daim ntawv cog lus rau plaub lub atom hydrogen raws li qhia hauv daim duab hauv qab no. Thaum qhov no tshwm sim, cov nitrogen atom tau txais txiaj ntsig zoo thiab ua tau tam sim no koom nrog ionic bonds. Cov amine pab pawg ua haujlwm tau muaj nyob rau hauv lub xeev deprotonated los yog protonated.
Koj yuav txiav txim siab li cas yog tias pawg ua haujlwm yog acidic lossis yooj yim?
Cov pab pawg ua haujlwm pab rau txiav txim seb ib yam dab tsi yog acid, pH tsawg, los yog yooj yim thiab muaj pH siab. Ib qho piv txwv ntawm ib acidic functional pab pawg neeg yog carboxyl. Cov carboxyl pab pawg ua haujlwm yog acidic vim nws yog ib tug proton (H +) pub dawb thaum nyob rau hauv kev daws.
Pom zoo:
Puas muaj zog acid thiab qaug zog hauv paus ua rau tsis muaj?
Raws li koj tau pom hauv kev suav cov pH ntawm cov kev daws teeb meem, tsuas yog ib qho me me ntawm cov kua qaub uas muaj zog heev yog qhov tsim nyog los hloov pH. Ib qho tsis yog tsuas yog sib xyaw ntawm cov kua qaub tsis muaj zog thiab nws lub hauv paus conjugate lossis lub hauv paus tsis muaj zog thiab nws cov conjugate acid. Buffers ua hauj lwm los ntawm reacting nrog ib qho ntxiv acid los yog hauv paus tswj pH
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