Video: Yuav ua li cas thiaj kuaj tau esters?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Ib txoj kev yooj yim ntawm kuaj pom tsw ntawm ester yog ncuav sib tov rau hauv ib co dej nyob rau hauv ib tug me me beaker. Sib nrug los ntawm cov me me, esters yog insoluble nyob rau hauv dej thiab zoo li tsim ib txheej nyias ntawm qhov chaw. Ntau cov kua qaub thiab cawv ob qho tib si yaj thiab raug kaw kom zoo nyob hauv qab ester txheej
Tom qab ntawd, dab tsi ua rau ester?
Hauv chemistry, ib ester yog ib qho tshuaj sib xyaw ua ke los ntawm cov kua qaub (organic lossis inorganic) uas tsawg kawg ib pawg -OH (hydroxyl) tau hloov los ntawm pawg -O-alkyl (alkoxy). Feem ntau, esters yog muab los ntawm carboxylic acid thiab ib qho cawv.
Tsis tas li ntawd, ester muaj nuj nqi yog dab tsi? Esters yog a muaj nuj nqi pawg feem ntau ntsib hauv organic chemistry. Lawv yog cov cim los ntawm cov pa roj carbon khi rau peb lwm cov atoms: ib daim ntawv cog lus rau carbon, ob daim ntawv cog lus rau oxygen, thiab ib daim ntawv cog lus rau oxygen. Lub singly khi oxygen yog khi rau lwm cov pa roj carbon.
Kuj nug, dab tsi yog qhov ester tsw zoo li?
Esters . Esters yog cov polar molecules, tab sis lawv cov ntsiab lus kub kub qis dua cov carboxylic acids thiab cawv ntawm qhov hnyav molecular zoo sib xws vim tias tsis muaj qhov sib xyaw ua ke ntawm hydrogen intermolecular. ester molecules. Acids muaj qhov tsis zoo tsw tsw , mas esters muaj fruity tsw tsw.
Qhov piv txwv ntawm ester yog dab tsi?
Piv txwv ntawm Esters Cov hydrogen ntawm pawg carboxyl ntawm acetic acid yog hloov nrog ib pawg ethyl. Lwm yam piv txwv ntawm esters suav nrog ethyl propanoate, propyl methanoate, propyl ethanoate, thiab methyl butanoate.
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