Raws li lub npe qhia, acid anyhydrides yog derivatives ntawm carboxylic acids. Raws li txoj cai, lawv tuaj yeem ua tau zoo sib xws(qhov twg ob pawg R zoo ib yam) lossis asymmetric (qhov twg ob pawg R sib txawv). … Cyclic anhydrides muab tau los ntawm dicarboxylic acids yog lub npe li -dioic anhydrides.
Koj paub li cas cov kua qaub anhydride?
Anhydrides yog pab pawg ua haujlwm uas yog qhov tseem ceeb ntawm cov kua qaub lossis cov hauv paus. Acid anhydrides yuav muaj R-COO-CO-R' qauv qhov twg R thiab R' yog alkyl pawg. Thaum cov anhydrides yooj yim yuav tsis muaj cov qauv ntawm atomic lossis molecular sib txuas.
Koj npe li cas asymmetric anhydride?
Koj lub npe unsymmetrical acid anhydrides los ntawm naming txhua yam carboxylic acid alphabetically (tsis muaj lo lus acid), ua raws li spaces thiab ces lo lus anhydride.
Tus qauv ntawm cov kua qaub anhydride yog dab tsi?
Ib qho kua qaub anhydride yog ib qho chaw uas muaj ob pawg acyl sib txuas rau tib lub atom oxygen . Ib hom organic acid anhydride yog carboxylic anhydride, qhov twg cov niam txiv acid yog carboxylic acid, cov mis ntawm anhydride yog (RC(O)) 2 O.
Lub cev lub zog ntawm cov kua qaub anhydride yog dab tsi?
qis aliphatic anhydrides yog colourless, pungent tsw kua muag. Siab dua aliphatic acid anhydrides thiab aromatic acid anhydrides yog cov khoom tsis muaj xim. Lawv yogsoluble nyob rau hauv cov organic solvents xws li cawv, ether. Cov ntsiab lus kub yog siab dua cov ntawm lawv niam lawv txiv acids.
