Video: Vim li cas Ester insoluble hauv dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Esters tuaj yeem tsim hydrogen bonds los ntawm lawv cov pa atoms mus rau hydrogen atoms ntawm dej molecules. Yog li, esters me ntsis soluble nyob rau hauv dej . Txawm li cas los xij, vim esters tsis muaj hydrogen atom los tsim ib daim ntawv cog lus hydrogen rau ib qho atom ntawm oxygen dej , lawv muaj tsawg soluble tshaj carboxylic acids.
Ntxiv mus, yog vim li cas esters immiscible nyob rau hauv dej?
Qhov me esters yog zoo soluble nyob rau hauv dej tab sis solubility poob nrog saw ntev. Yog vim li cas rau lub solubility yog hais tias txawm esters tsis tuaj yeem hydrogen daim ntawv cog lus nrog lawv tus kheej, lawv muaj peev xwm hydrogen bond nrog dej molecules. Raws li saw lengths nce, hydrocarbon qhov chaw ntawm lub ester molecules pib mus rau hauv txoj kev.
Ib tug kuj nug, puas yog esters hydrophobic? Yog li ntawd, esters thiab ketones bearing feem ntau polar pawg tsis raug cais rau hauv hydrophilic cov tebchaw, tab sis mus rau hauv "hydroneutral" compounds positioned ntawm hydrophilic thiab hydrophobic cov.
Ib yam li ntawd, koj tuaj yeem nug, vim li cas esters tsis yog polar?
Carboxylate pawg yog ib pawg polar nyob rau hauv nws tus kheej tab sis tsis muaj polar carbon thiab hydrogen chains ncig nws. Vim lawv nyob, ester molecules tsuas yog me ntsis polar vim hais tias ntawm dipole-dipole bonding ntawm lawv. Resonance yog qhov tseem ceeb hauv esters.
Puas yog esters kua lossis aqueous?
Esters muaj polar bonds tab sis tsis koom nrog hydrogen bonding thiab yog li ntawd nruab nrab ntawm cov ntsiab lus kub ntawm cov nonpolar alkanes thiab cov cawv, uas koom nrog hydrogen bonding. Ester molecules tuaj yeem koom nrog hydrogen bonding nrog dej, yog li esters ntawm cov molar tsawg yog li ntawd me ntsis soluble hauv dej.
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