2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Thaum protonation, tus nqi kuj tseem tuaj yeem raug tshem tawm los ntawm kev rov ua haujlwm. Txawm li cas los xij, carboxylic acids yog, qhov tseeb, tsawg dua qhov yooj yim ketones lossis aldehydes. Ntxiv mus, txawm hais tias carbonic acid (HO-COOH) yog acidic ntau dua li acetic acid, nws yog qhov yooj yim dua.
Koj tuaj yeem qhia tau li cas carboxylic acid yog acidic dua?
Electronegative substituents nce acidity los ntawm inductive electron rho tawm. Raws li qhov xav tau, qhov siab dua qhov electronegativity ntawm qhov hloov pauv ntau dua qhov nce hauv acidity (F > Cl > Br > I), thiab qhov ze dua qhov hloov pauv yog rau pawg carboxyl ntau dua yog nws. cov nyhuv (isomers hauv kab thib 3).
Qhov twg carboxylic acid yog cov kua qaub tshaj plaws?
Ib yam li ntawd, chloroacetic acid, ClCH2 COOH , uas cov hluav taws xob thim tawm cov tshuaj chlorine tau hloov cov hydrogen atom, yog li 100. lub sij hawm muaj zog dua li cov kua qaub dua li acetic acid, thiab nitroacetic acid, TSIS MUAJ 2 CH 2 COOH, tseem muaj zog dua.
Qhov twg hauv qab no yog cov kua qaub tshaj COOH?
Vim li no, p hydroxybenzaldehyde yog, muaj zog tshaj acid.
Yuav ua li cas yog qhov kev txiav txim ntawm acidity ntawm carboxylic acids?
+ Kuv cov nyhuv txo qis cov kua qaub ntawm carboxylic acid thiab -Kuv cov nyhuv ua rau cov kua qaub ntau ntxiv. Txij li qhov kev txiav txim electronegativity ntawm 'C' txuas rau carboxylic acid yog sp>sp2>sp3, li no qhov kev txiav txim yog I > II > III > IV.
Pom zoo:
Qhov twg tag nrho cov nqi hluav taws xob nyob ntawm qhov kev siv nyiaj siab tshaj plaws yog qhov twg?
marginal utility is zero. Tag nrho cov nqi hluav taws xob yog siab tshaj thaum marginal utility yog xoom. Qhov no yog vim muaj ntau txoj cai ntawm kev txo qis marginal utility uas hais tias tus neeg siv khoom noj ntau thiab ntau qhov zoo, qhov ntxiv rau tag nrho cov nqi hluav taws xob poob.
Carboxylic acid siv qhov twg?
Carboxylic acids thiab lawv cov derivatives yog siv rau hauv tsim cov polymers, biopolymers, coatings, adhesives, thiab tshuaj tshuaj. Lawv kuj tuaj yeem siv los ua cov kuab tshuaj, khoom noj khoom haus ntxiv, tshuaj tua kab mob, thiab tsw. Cov carboxylic acids twg yog siv hauv lub neej txhua hnub?
Puas yog carboxylic acid soluble hauv dej?
me me carboxylic acids (txog 5 carbons) yog soluble hauv dejtab sis cov solubility txo qis nrog qhov loj me. Qhov no yog vim hydrophobic xwm ntawm alkly chains. 1. Carboxylic acids hnov mob nrog cawv los muab ESTERS. Vim li cas carboxylic acid soluble hauv dej?
Qhov twg yog qhov piv txwv zoo tshaj ntawm kev tshaj tawm?
Qee yam piv txwv ntawm cov tuam txhab uas tawm tswv yim suav nrog: Google. Google tau pib ua lub tshuab tshawb nrhiav yooj yim tab sis txij li tau dhau los ua ib lub koom haum loj muab kev pabcuam kho vajtse thiab software ntxiv rau nws cov kev pabcuam tshaj tawm nrog cov neeg ua haujlwm faib thoob ntiaj teb.
Vim li cas carboxylic acid soluble hauv dej?
Hydrogen bonds yog tsim los ntawm tus kheej molecules ntawm acid thiab dej molecules thaum carboxylic acid ntxiv rau dej. Cov kev sib cuam tshuam no ua rau cov carboxylic acids soluble hauv dej. Lower carboxylic acids (txog plaub carbon atoms) yog yooj yim soluble nyob rau hauv dej vim rau hydrogen bonding.
