2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Muaj zog acids cais tawm (sib cais) tag nrho hauv dej). Rau piv txwv , HCl, a muaj zog acid yuav sib cais ua H+ thiab Cl-ions. Tsis muaj kua qaub dissociate ib nrab hauv dej. Rau piv txwv , HF, ib qaug zog acid , yuav tsuas muaj qee qhov ntawm HF molecules dissociated nyob rau txhua lub sijhawm.
Xav txog qhov no, cov kua qaub muaj zog thiab tsis muaj zog muab piv txwv li cas?
Piv txwv ntawm muaj zog acids yog hydrochloric kua qaub (HCl), perchloric kua qaub (HLO4), Nitric kua qaub (HNO3) thiab sulfuric kua qaub (H.2YOG4). A qaug zog acid tsuas yog ib feem dissociated, nrog ob qho tib si undissociated kua qaub thiab nws cov khoom dissociation yog tam sim no, nyob rau hauv kev daws, nyob rau hauv equilibrium nrog ib leeg. HA ⇌ H+ + A−.
Ib yam li ntawd, cov tsis muaj zog acids muab piv txwv li cas? Cov kua qaub tsis muaj zog muaj qhov pH qis thiab siv los ua kom tsis muaj zog hauv paus. Piv txwv ntawm cov kua qaub uas tsis muaj zog suav nrog: acetic acid (vinegar), lactic acid, citric acid, thiab phosphoric acid.
Tsis tas li ntawd, muaj zog acid thiab qaug zog acid yog dab tsi muab ob qho piv txwv?
Piv txwv ntawm a muaj zog acid suav nrog hydrochloric kua qaub ( HCl sulfuric), cov kua qaub (H2SO4), nitric kua qaub (HNO3)… Piv txwv ntawm a qaug zog acid suav nrog acetic / ethanoic kua qaub (piv txwv li hauv vinegar) (CH3COOH), Hydrofluoric kua qaub (HF), dej (uas peb yuav tsum nco ntsoov yog amphoteric) (H2O)…
Koj txhais li cas los ntawm cov kua qaub thiab tsis muaj zog?
A qaug zog acid yog ib kua qaub uas ib nrab faib rau hauv nws cov ions hauv cov kua dej lossis dej. Hauv kev sib piv, a muaj zog acid tag nrho dissociates rau hauv nws cov ions hauv dej. Nyob rau tib lub siab, tsis muaj zog acids muaj pH ntau dua muaj zog cov kua qaub.
Pom zoo:
Dab tsi yog qhov piv txwv piv txwv hauv kev txheeb cais?
Nyob rau hauv kev txheeb cais, sampling bias yog ib tug bias nyob rau hauv uas ib tug piv txwv yog sau nyob rau hauv xws li ib tug txoj kev uas ib co tswv cuab ntawm cov neeg npaj muaj ib tug tsawg sampling probability tshaj lwm tus
Dab tsi yog qhov qaug zog acid thiab muaj zog puag tsim?
Cov ntsev ntawm cov kua qaub tsis muaj zog thiab lub hauv paus muaj zog ua rau hydrolysis hauv dej los tsim OH-ions ntxiv. Txij li thaum acetic acid yog ib qho tsis muaj zog acid, nws tseem unionized nyob rau hauv kev daws thiab cov OH-ions ua rau cov tshuaj yooj yim los yog alkaline. Ib yam li ntawd, ntsev ntawm lub zog acid thiab tsis muaj zog hauv paus yog acidic nyob rau hauv aqueous tov
Dab tsi yog cov khoom noj khoom haus thiab cov khoom noj web piav qhia nrog piv txwv?
Lub saw zaub mov tsuas yog ua raws li ib txoj hauv kev thaum tsiaj nrhiav zaub mov. Piv txwv li: Ib tug hawk noj ib tug nab, uas tau noj ib tug qav, uas tau noj ib tug nas tsuag, uas tau noj nyom. Lub vev xaib zaub mov qhia ntau txoj hauv kev sib txawv ntawm cov nroj tsuag thiab tsiaj sib txuas. Piv txwv li: Ib tug hawk kuj yuav noj nas, squirrel, qav lossis lwm yam tsiaj
Piv txwv li, muaj zog acid thiab qaug zog acid yog dab tsi?
Piv txwv ntawm cov acids muaj zog yog hydrochloric acid (HCl), perchloric acid (HClO4), nitric acid (HNO3) thiab sulfuric acid (H2SO4). Cov kua qaub tsis muaj zog tsuas yog qee qhov sib cais, nrog rau ob qho tib si undissociated acid thiab nws cov khoom dissociation tam sim no, nyob rau hauv kev daws, nyob rau hauv equilibrium nrog ib leeg
Vim li cas cov duab ntawm titration nkhaus txawv rau titration ntawm muaj zog acid vs muaj zog puag thiab qaug zog acid vs muaj zog puag?
Cov duab dav dav ntawm titration nkhaus yog tib yam, tab sis pH ntawm qhov sib npaug sib txawv. Hauv qhov tsis muaj zog acid-muaj zog titration, pH yog ntau dua 7 ntawm qhov sib npaug. Hauv qhov muaj zog acid-tsis muaj zog titration, pH tsawg dua 7 ntawm qhov sib npaug