Vim li no, nws tests zoo rau Tollens reagent … Aldehydes xws li benzaldehyde, tsis muaj alpha hydrogens thiab tsis tuaj yeem tsim ib qho enolate thiab yog li tsis muab qhov kev sim zoo nrog Fehling cov tshuaj uas yog Piv txwv li, tsis muaj zog oxidizing tus neeg sawv cev dua li Tollen's reagent, raws li ib txwm muaj. Yog li ntawd, nws kuaj tsis zoo.
Puas benzaldehyde txo cov tollens reagent?
Benzaldehyde txo Tollens 'reagent tab sis tsis yog Fehling's lossis Benedict's tov. … Lub electron-donating resonance effect (+ R-effect) ntawm lub nplhaib benzene tsub kom cov electron ceev nyob rau hauv cov carbonly pawg ntawm benzaldehyde. Qhov no, nyob rau hauv lem, tsub kom lub electron ceev nyob rau hauv lub C-H daim ntawv cog lus ntawm aldehyde pawg.
Puas benzaldehyde muab cov iav nyiaj kuaj?
Benzaldehyde muab iav nyiaj nrog Tollen's reagent.
Yuav ua li cas aldehyde tsis muab tus lej ntsuas?
Tollens 'reagent muab qhov ntsuas tsis zoo rau feem ntau ketones, nrog alpha-hydroxy ketones yog ib qho kev zam. Qhov kev ntsuam xyuas nyob ntawm qhov chaw uas aldehydes tau yooj yim oxidized piv nrog ketones; Qhov no yog vim cov carbonyl-muaj cov pa roj carbon monoxide nyob rau hauv aldehydes muaj ib tug txuas hydrogen.
Puas hydroxylamine muab tus lej kuaj?
Nws tsis muab qhov zoo Tollens 'test tab sis phenyl hydroxyl amine puas.
