Video: Puas yog ethanol volatile dua dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Haus cawv ( ethanol ) thiab ntau lwm yam cawv yooj yim yog ntau volatile tshaj dej vim lawv muaj tsawg polar. Ethanol yog nplaum ntau dua thiab ntxiv nkag mus rau hauv lub xeev gas, li no ua rau nws ntau volatile tshaj dej.
Ib yam li ntawd, tib neeg nug, puas yog ethanol ua kua tsis haum?
Ethanol yog qhov tseeb, tsis muaj xim ua kua nrog tus yam ntxwv qab ntxiag tsw thiab hlawv saj. Nws yog heev flammable. Ethanol yog siv los yaj lwm yam tshuaj thiab sib tov nkag tau nrog dej thiab ntau cov organic kua . Ethanol yog suav tias yog ib tsis hloov pauv organic compound los ntawm National Pollutant Inventory.
Ib sab saum toj, cov kua dej twg yog qhov tsis muaj zog tshaj? Mercury yog a tsis hloov pauv keeb. Ua kua mercury muaj lub siab vapor siab, yooj yim tso cov khoom mus rau hauv huab cua.
Ntawm no, qhov twg yog qhov hloov pauv methanol lossis ethanol?
Muaj zog intermolecular rog yuav ua rau cov khoom tsis muaj zog tsis hloov pauv . Raws li tau sau tseg hauv thawj qhov lus teb, methanol yog ntau volatile tshaj ethanol . Methanol thiab ethanol ob leeg yuav muaj ob qho tib si hydrogenbonding (ib hom muaj zog ntawm dipole-dipole attraction) thiab London dispersion rog.
Puas yog dej volatile?
Feem ntau dej tsis xam tsis hloov pauv vim nws tsis yooj yim li evaporated ntawm qhov kub thiab txias piv rau ntau dua tsis hloov pauv kua xws li methanol oracetone. Hauv kev cai lij choj ib puag ncig, dej tsis xam tsis hloov pauv vim evaporation ntawm dej tsis muaj kev cuam tshuam ib puag ncig.
Pom zoo:
Cov ntsia hlau puas yuav xeb sai dua hauv dej ntsev lossis dej tshiab?
Teb: Qhov corrosion ntawm hlau qhia tias muaj tshuaj hloov pauv hauv cov hlau. Rust (hydrous oxide) yog ib qho piv txwv ntawm qhov kev hloov no uas tshwm sim thaum hlau raug dej los yog huab cua ntub. Koj cov ntsia hlau hlau tiag tiag yuav xeb sai dua thiab hnyav hauv dej ntsev
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
Puas yog ethanol lossis acetone muaj qhov kub siab dua?
Yog li, ethanol (nrog rau H-bonding peev) yuav tsum muaj qhov kub siab tshaj plaws, nrog polar acetone muaj qhov kub siab tshaj plaws tom ntej, thiab cov nonpolarpropane, nrog lub zog tsis muaj zog ntawm lub cev, yuav muaj qhov kub siab tshaj plaws. 41
Dab tsi yog qhov tseem ceeb tshaj plaws uas yuav tsum muaj rau cov kua dej ntws hauv cov kav dej Dab tsi lwm yam cuam tshuam rau cov dej ntws?
Thaum ib qho kev quab yuam sab nraud yog exerted rau ntawm cov kua uas muaj, qhov tshwm sim siab yog kis sib npaug thoob plaws hauv cov kua. Yog li txhawm rau kom dej ntws, dej xav tau qhov sib txawv siab. Cov kav dej kuj tuaj yeem cuam tshuam los ntawm cov kua dej, cov yeeb nkab loj, qhov kub thiab txias (cov kav dej khov), cov kua dej ntom ntom