Video: Koj tuaj yeem qhia qhov txawv ntawm acetaldehyde thiab benzaldehyde li cas?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Nyob ntawd, qhov tseem ceeb yog pawg carbonyl yog tam sim no ineach thiab txhua aldehyde molecule. Benzaldehyde thiab acetaldehyde yog ob qho piv txwv ntawm pawg ntawm aldehydes . Benzaldehyde yog ib qho aromatic compound whereas acetaldehyde yog ib qho aliphatic compound. Qhov no yog lub ntsiab Qhov sib txawv ntawm Benzaldehyde thiab Acetaldehyde.
Hauv qhov no, kev kuaj tshuaj twg tuaj yeem siv los ntsuas qhov txawv ntawm benzaldehyde thiab acetaldehyde?
Benzaldehyde tau txais tollens reagent xeem los yog Silver mirror xeem tab sis acetaldehyde tsis undergoes qhov no xeem . 1. Benzaldehyde reactwith Tollens reagent thiab yog li ntawd tollens'oxidizes cov aldehyde pab pawg rau hauv pawg carboxylate raws li qhov tshwm sim hauv tus tsim ntawm ib tug silver metalprecipitate.
Ib sab saum toj no, koj tuaj yeem qhia qhov txawv ntawm acetophenone thiab benzaldehyde li cas? Benzaldehyde ua ib qho aldehyde txo Tollen'sreagent muab cov xim liab-xim av precipitate ntawm Cu2O, mas acetophenone ua ketone tsis yog. Acetophenone ua ib tug methyl ketone undergoes oxidation los ntawm sodium hypoiodite (NaOI) muab ib tug daj ppt. ntawm iodoform. Tab sis tshuaj benzaldehyde tsis teb rau qhov kev xeem no.
Tib neeg kuj nug, koj tuaj yeem qhia qhov txawv ntawm formaldehyde thiab acetaldehyde li cas?
Formaldehyde tsis muaj ib pawg R li lwm yam aldehyde, tsis yog R pawg nws muaj hydrogen atom. Formaldehyde yog ib qho roj, hos lwm yam aldehydes feem ntau nyob rau hauv lub gaseous los yog kua theem. Formaldehyde muaj pungentodour, thaum feem ntau aldehydes muaj ntxhiab tsw qab ntxiag.
Puas yog benzaldehyde muab cov tshuaj tollens?
Yog li, qhov no xeem muab ib qho txiaj ntsig zoo foraldehydes. Cov tshuaj tiv thaiv ntawm tshuaj benzaldehyde nrog Tollen'sreagent Nws yog qhov tseem ceeb tshaj rau kev ua haujlwm Tollen's reagent indetermining ib qho aldehyde ntau dua li Benedict's xeem . Nws yog vim Benedict's reagent tuaj yeem tsuas yog oxidized aldehydes uas yog aliphatic.
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