Esters tuaj yeem tsim cov ntawv cog lus hydrogen los ntawm lawv cov pa atoms mus rau hydrogen atoms ntawm cov dej molecules. Raws li qhov tshwm sim, esters me ntsis soluble hauv dejTxawm li cas los xij, vim tias esters tsis muaj hydrogen atom los tsim cov hydrogen daim ntawv cog lus rau cov pa atom ntawm cov dej, lawv tsis soluble dua li carboxylic acids.
dej ua dab tsi rau tus ester?
Hydrolysis yog ib hom tshuaj tiv thaiv uas cov dej molecule tawg ib daim ntawv cog lus. Nyob rau hauv cov ntaub ntawv ntawm ib tug ester hydrolysis, lub nucleophile - dej los yog ib tug hydroxide ion - tawm tsam cov carbonyl carbon ntawm pawg ester kom tawg ester daim ntawv cog lus.
Vim li cas esters ntab saum dej?
Cov ester tsis soluble hauv dej yog li yuav sib cais rau hauv ib txheej nyias. Cov ester tsawg dua li dej yog li cov ester txheej ntab saum cov txheej dej.
Puas yog esters polar lossis nonpolar?
Esters. Esters yog polar molecules, tab sis lawv cov ntsiab lus kub hnyiab yog qis dua cov carboxylic acids thiab cawv ntawm qhov hnyav molecular vim tias tsis muaj kev sib txuas ntawm cov hydrogen sib txuas ntawm ester molecules.
Puas yog esters hydrophobic lossis hydrophilic?
Yog li ntawd, esters thiab ketones bearing ib txwm polar pawg tsis tau muab cais ua hydrophilic compounds, tab sis mus rau hauv "hydroneutral" compounds positioned ntawm hydrophilic thiab hydrophobic ones.
