Peb pom tias tom qab kev sib hloov, duab 1 thiab duab 2 yog superimposable (superposable) nrog ib leeg. Yog li ntawd, lub arbitrary molecule yog achiral. Tseem muaj qhov chaw ntawm symmetry nyob rau hauv lub molecule: Cov molecule no muaj ib lub dav hlau ntawm symmetry qhia los ntawmkab dotted.
Puas yog 2-nitrophenol acidic lossis yooj yim?
Tus nqi pKa rau phenol yog 10.0, thiab ob qhov kev hloov phenols tau muab: 2-fluorophenol, 3-fluorophenol, thiab 4-fluorophenol muaj pKa qhov tseem ceeb ntawm 8.7, 9.3, thiab 9.9, raws li; 2-nitrophenol, 3-nitrophenol, thiab 4-nitrophenol muaj pKa qhov tseem ceeb ntawm 7.2, 8.4, thiab 7.2, raws li.
Lub npe ntawm 2-nitrophenol yog dab tsi?
o-Nitrophenol (2-nitrophenol; OH thiab NO2 pawg neeg nyob sib ze; CAS naj npawb: 88-75-5), daj crystalline khoom (m.p. 46 °C).
Puas yog 2-nitrophenol toxic?
Dej insoluble. 2-NITROPHENOL yog daj, crystalline khoom, mob hnyav, qis melting point (45 ° C). Thaum rhuab mus rau decomposition nws emits lom fumes ntawm oxides ntawm nitrogen.
Vim li cas 4-nitrophenol muaj qhov kub siab dua li 2-nitrophenol?
Yog li no nyob rau hauv rooj plaub ntawm 2-nitrophenol, vim hais tias rau intramolecular Hydrogen-bonding nws ua raws li ib tug monomer whereas nyob rau hauv cov ntaub ntawv ntawm 4-nitrophenol vim intermolecular Hydrogen-bonding nws tsim polymer-zoo li qauv los ntawm kev cuam tshuam nrog cov nyob sib ze molecules uas ua rau kom qhov hnyav molecular ntawm lub cev nyob rau hauv rooj plaub ntawm 4- …
