Video: Dab tsi yog acidic phenol ntau dua ether?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Vim lub delocalization ntawm cov nqi tsis zoo nyob rau hauv lub nplhaib benzene, phenoxide ions yog ntau ruaj khov dua alkoxide ions. Yog li ntawd, peb tuaj yeem hais phenols yog ntau acidic dua li cawv.
Ntxiv mus, ua li cas koj thiaj paub qhov twg phenol yog acidic dua?
Phenols yog ntau acidic thaum lub nplhaib hloov nrog cov pawg electron rho tawm. Cov kev hloov pauv no ua kom ruaj khov ntawm phenoxide ion los ntawm kev ntxiv delocalizing cov nqi tsis zoo. Phenols hloov nrog cov pab pawg neeg pub dawb yog tsawg dua acidic tshaj phenol.
Ib yam li ntawd, vim li cas phenol yog acidic dua li aliphatic? Hauv phenol , rub lub pz electrons los ntawm oxygen atom rau hauv lub nplhaib ua rau hydrogen atom ua ntau ib feem zoo tshaj nws yog nyob rau hauv aliphatic cawv . Qhov no txhais tau tias nws yog ntau heev ntau yooj yim ploj ntawm phenol tshaj nws yog los ntawm aliphatic cawv , yog li phenol muaj ib muaj zog acidic vaj tse tshaj ethanol.
Tsuas yog li ntawd, puas yog phenol A muaj zog lossis qaug zog acid?
Phenol yog ib heev qaug zog acid thiab txoj hauj lwm ntawm equilibrium nyob zoo rau sab laug. Phenol tuaj yeem plam hydrogen ion vim tias phenoxide ion tsim tau ruaj khov rau qee qhov. Tus nqi tsis zoo ntawm cov pa atom yog delocalised nyob ib ncig ntawm lub nplhaib. Qhov ruaj khov dua cov ion yog, qhov ntau dua nws yog tsim.
Dab tsi yog alcohols phenols thiab ethers?
Cawv , Phenol, thiab Ether . Cawv yog cov khoom uas peb tau txais thaum lub saturated carbon atom bonds rau ib pawg hydroxyl (-OH). Phenol yog qhov peb tau txais thaum pawg -OH hloov cov hydrogen atom hauv benzene. Ether yog cov khoom uas peb tau txais thaum cov pa atom sib txuas rau ob pawg alkyl lossis aryl.
Pom zoo:
Dab tsi yog qhov feem ntau acidic functional pawg?
Cov pawg sulfonic, phosphoric, thiab carboxylic acid yog cov acids uas muaj zog tshaj plaws. Ntau pab pawg ua haujlwm coj zoo li tsis muaj zog acids
Dab tsi yog acidic ethanol ntau dua los yog phenol?
Hauv phenol, rub cov pz electrons los ntawm oxygen atom mus rau hauv lub nplhaib ua rau cov hydrogen atom ua ib feem zoo dua li nws muaj nyob rau hauv aliphatic alcohols. Qhov no txhais tau tias nws yooj yim dua ploj los ntawm phenol dua li nws yog los ntawm aliphatic cawv, yog li phenol muaj cov khoom muaj zog acidic dua li ethanol
Puas yog phenol tsawg acidic dua ethanol?
Phenol yog acidic ntau dua li ethanol vim tias phenoxide ion ruaj khov dua ethoxide ion vim resonance
Qhov twg yog acidic ntau dua ib qho kev daws ntawm pH 2 lossis kev daws ntawm pH 6?
Kev piav qhia: pH yog qhov ntsuas ntawm acidity lossis alkalinity ntawm cov tshuaj. concentration siab dua yog acidity. Yog li ib qho kev daws ntawm pH = 2 yog acidic ntau dua li ntawm pH = 6 los ntawm qhov zoo ntawm 10000
Vim li cas phenol soluble hauv NaOH ntau dua li dej?
Phenol yog soluble hauv NaOH ntau dua hauv dej vim tias phenol yog acidic me ntsis. ua rau sodium phenoxide ntxiv ruaj khov. los tsim ib Hydronium ion (H30) phenol nrog sodium yog cov tshuaj tiv thaiv qeeb vim tias phenol yog cov kua qaub tsis muaj zog