Video: Yuav ua li cas tshwm sim thaum ib tug muaj zog acid yaj nyob rau hauv dej?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum ib acid yaj nyob rau hauv dej , ib qho proton (hydrogen ion) raug xa mus rau a dej molecule los tsim ib hydroxonium ion thiab ib tug tsis zoo ion nyob ntawm seb dab tsi kua qaub koj pib los ntawm. A muaj zog acid yog ib qho uas zoo li 100% ionised hauv kev daws teeb meem. Lwm yam muaj zog acids suav nrog sulfuric kua qaub thiab nitric kua qaub.
Ua kom pom qhov no, puas muaj cov kua qaub uas muaj zog yaj hauv dej?
Rau txhua lub hom phiaj siv tau, muaj zog acids kiag li dissociate nyob rau hauv dej . Qhov ntawd yog qhov txhais: A muaj zog acid yog ib kua qaub uas kiag dissociates nyob rau hauv dej . Rau txhua lub hom phiaj siv tau, HCl yog dissociated tag nrho hauv kev daws. Muaj zog acids muaj ib tug loj dissociation tas li, yog li ntawd lawv dissociate kiag li nyob rau hauv dej.
Ib tug kuj yuav nug, yuav ua li cas tshwm sim thaum lub hauv paus muaj zog yaj hauv dej? Thaum twg yaj hauv dej , acids pub hydrogen ions (H +). Bases , ntawm qhov tod tes, tov nrog dej yield hydroxide ions (OH-). Yog hais tias cov tshuaj muaj ib tug siab concentration ntawm H + ions, ces nws yog acidic. Yog tias qhov kev daws teeb meem muaj qhov siab ntawm OH-ions, ces nws yog qhov yooj yim.
Tsis tas li ntawd, yuav ua li cas thaum muaj cov kua qaub uas muaj zog tso rau hauv dej?
A muaj zog acid , thaum muab tso rau hauv dej , yuav luag tag nrho ionise / dissociate tam sim ntawd, tsim H 3 O + ions los ntawm dej . Ib qho tsis muaj zog kua qaub yuav, txawm li cas los xij, tsuas yog ib nrab dissociate rau hauv ions, tawm hauv feem pua ntawm cov molecules uas tsis muaj kev cuam tshuam hauv cov tshuaj.
Yuav ua li cas thaum lub acid yaj?
Cov kua qaub yog cov khoom uas thaum yaj Hauv dej tso tawm hydrogen ions, H +(aq). Thaum twg yaj , hauv paus tso tawm hydroxide ions, OH-(aq) rau hauv kev daws teeb meem. Dej yog qhov khoom ntawm ib qho kua qaub thiab puag reacting. Chemists hais tias kua qaub thiab lub hauv paus tshem tawm lossis nruab nrab ib leeg, yog li cov tshuaj tiv thaiv hu ua "neutralisation".
Pom zoo:
Yuav ua li cas tshwm sim rau tam sim no nyob rau hauv ib tug parallel circuits thaum ntxiv qhov muag teev?
Raws li ntau qhov muag tau ntxiv, qhov tam sim no nce. Raws li ntau resistors ntxiv nyob rau hauv parallel, tag nrho tam sim no lub zog nce. Yog li ntawd, tag nrho cov tsis kam ntawm Circuit Court yuav tsum tau txo. Qhov tam sim no nyob rau hauv txhua lub teeb yog tib yam vim hais tias tag nrho cov qhov muag teev glowed nrog tib brightness
Yuav ua li cas tshwm sim thaum koj sib tov ib tug muaj zog acid nrog ib tug tsis muaj zog puag?
Hom 2: thaum muaj zog acid / base reacts nrog lub hauv paus tsis muaj zog / acid yog hydronium thiab hydroxyl ions tam sim no nyob rau hauv sib npaug amt ces ntsev thiab dej yog tsim thiab lub zog tso tawm uas tsawg tshaj li 57 kj / mole vim lub dissociation ntawm lub tsis muaj zog acid / puag uas feem ntau endothermic
Yuav ua li cas tshwm sim thaum ib tug tam sim no nqa coil muab tso rau hauv ib tug magnetic teb?
Yog tias tus neeg nqa khoom nqa tam sim no tau muab tso rau hauv qhov chaw sib nqus, nws ntsib lub zog Lorentz (tshwj tsis yog lub kaum sab xis ntawm qhov ntws ntawm tam sim no thiab cov kab hlau nplaum yog 0 °)
Yuav ua li cas yog qhov tshwm sim uas ib tug poj niam dig muag xim uas yuav ib tug txiv neej uas tsis pom kev zoo yuav muaj xim dig muag me nyuam?
Yog tias tus poj niam uas muaj lub zeem muag zoo li no (heterozygous rau qhov muag tsis pom xim) yuav ib tug txiv neej ib txwm muaj (XY), cov xeeb ceem hauv qab no tuaj yeem xav tau hauv F2 tiam: ntawm cov ntxhais, 50% yog ib txwm muaj thiab 50% yog cov neeg nqa khoom rau cov kab mob; ntawm cov tub, 50% yog xim dig muag thiab 50% yog qhov pom kev zoo
Yuav ua li cas tshwm sim thaum koj ntxiv ib tug qaug zog acid rau dej?
Thaum cov kua qaub uas tsis muaj zog ntxiv rau hauv dej, cov ntaub ntawv sib npaug sib npaug hauv cov kua qaub molecules, HA (aq), hnov mob nrog cov dej ua kua los tsim cov aqueous hydronium ions thiab aqueous anions, A-(aq). Cov tom kawg yog tsim thaum cov kua qaub molecules poob H + ions rau dej