Cov txheej txheem:
Video: Dab tsi yog qhov feem ntau acidic functional pawg?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov tshuaj sulfonic, phosphoric, thiab carboxylic acid pab pawg yog cov muaj zog acids. Ntau pab pawg ua haujlwm coj zoo li tsis muaj zog acids.
Tsuas yog li ntawd, cov pab pawg ua haujlwm twg yog acidic hauv dej?
Cov pab pawg ua haujlwm no tsis muaj cov hydrogens pub dawb, yog li, lawv raug suav tias yog "tsis suav" thaum ntxiv rau dej. Txij li thaum a carboxyl pab pawg (- COOH ) npe a carboxylic acid , Kuv xav tias nws (A) yuav yog qhov kev xaiv raug.
Ib sab saum toj, qhov twg yog cov kua qaub tshaj plaws?
| Tus nqi pH | H+ Concentration txheeb ze rau dej ntshiab | Piv txwv |
|---|---|---|
| 0 | 10 000 000 | roj teeb kua qaub |
| 1 | 1 000 000 | gastric acid |
| 2 | 100 000 | txiv qaub kua txiv, vinegar |
| 3 | 10 000 | kua txiv kab ntxwv, dej qab zib |
Kuj paub, koj yuav paub li cas yog tias pawg ua haujlwm yog acidic lossis yooj yim?
A pab pawg ua haujlwm yog a pab pawg ntawm atoms thiab bonds nyob rau hauv ib lub molecule. 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 tus pub dawb proton (H+). thaum hauv kev daws teeb meem.
Dab tsi yog 7 pawg ua haujlwm?
Muaj 7 pawg ua haujlwm tseem ceeb hauv chemistry ntawm lub neej: Hydroxyl, Carbonyl, Carboxyl, Amino, Thiol, Phosphate, thiab aldehyde pawg
- Hydroxyl pawg: muaj hydrogen atom covalently bonded rau ib tug oxygen atom.
- Carbonyl pawg: yog sau raws li covalent C = O.
Pom zoo:
Dab tsi yog qhov txawv ntawm qhov pom tseeb qhov loj thiab qhov ntsuas qhov ntsuas qhov tseeb?
Dab tsi yog qhov txawv ntawm qhov pom tseeb thiab qhov tseeb? Pom meej qhov loj npaum li cas yog qhov ci ntawm lub hnub qub tshwm los ntawm lub ntiaj teb thiab nyob ntawm qhov ci thiab qhov deb ntawm lub hnub qub. Qhov loj npaum li cas yog qhov ci ntawm lub hnub qub yuav tshwm sim los ntawm tus qauv nyob deb
Dab tsi yog qhov pH ntau ntawm cov tshuab tsis siv neeg feem ntau?
Ntau lub tshuab buffering muaj nyob hauv lub cev uas pab tswj cov pH ntawm cov ntshav thiab lwm cov kua dej hauv qhov nqaim - nruab nrab ntawm pH 7.35 thiab 7.45. Ib qho tsis yog ib yam khoom uas tiv thaiv kev hloov pauv ntawm cov kua dej pH los ntawm kev nqus dej ntau dhau los yog hydroxyl ions
Dab tsi feem ntau yog pab pawg ua haujlwm thiab vim li cas cov pab pawg no tseem ceeb?
Cov pab pawg ua haujlwm tau txuas mus rau carbonbackbone ntawm cov organic molecules. Lawv txiav txim siab tus yam ntxwv thiab tshuaj lom neeg reactivity ntawm molecules. Cov pab pawg ua haujlwm tsis tshua muaj kev ruaj ntseg dua li cov pa roj carbon monoxide thiab zoo li yuav koom nrog cov tshuaj tiv thaiv
Qhov feem pua muaj pes tsawg leeg ntawm pawg BA no3 2 yog dab tsi?
Cov feem pua ntawm cov ntsiab lus Element Symbol Mass Percent Barium Ba 52.548% Nitrogen N 10.719% Oxygen O 36.733%
Qhov twg ntawm cov ntsiab lus hauv qab no feem ntau pom nyob rau hauv feem ntau cov chiv?
Cov tshuaj chiv niaj hnub suav nrog ib lossis ntau tshaj ntawm peb lub ntsiab lus tseem ceeb tshaj plaws hauv cov zaub mov noj: nitrogen, phosphorus, thiab potassium. Qhov tseem ceeb thib ob yog cov ntsiab lus sulfur, magnesium, thiab calcium