Video: Kev qaug zog yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Hauv cov ntaub ntawv science, qaug zog yog qhov tsis muaj zog ntawm cov khoom siv los ntawm kev thauj khoom cyclic uas ua rau muaj kev loj hlob ntawm cov qauv kev puas tsuaj thiab kev loj hlob ntawm cov kab nrib pleb.
Ntxiv mus, dab tsi yog qaug zog zog?
2: Kev qaug zog Khoom siv Khoom . Qhov ratio qaug zog txwv rau tensile lub zog yog lub npe hu ua qaug zog ratio thiab muab los ntawm: Ib qho kev nce hauv tensile lub zog ntawm qhov chaw ua rau muaj kev nce ntxiv hauv cov qaug zog tsis kam Notch Sensitivity - Ua tsis tiav los ntawm qaug zog tshwm sim los ntawm kev loj hlob ntawm cov kab nrib pleb thiab tsis zoo.
Ib yam li ntawd, dab tsi ua rau qaug zog tsis ua haujlwm? Feem ntau qaug zog poob yog ua los ntawm cyclicloads ho qis dua cov loads uas yuav ua rau yielding ntawm cov khoom. Cov ua tsis tiav tshwm sim vim lub cyclic xwm ntawm lub load uas ua rau microscopic khoom imperfections (faws) kom loj hlob mus rau hauv macroscopic tawg (initiationphase).
Tsuas yog li ntawd, peb theem ntawm kev qaug zog yog dab tsi?
Muaj peb theem ntawm qaug zog tawg: pib, propagation, thiab zaum kawg rupture. Tseeb tiag, qhov no yog txoj kev uas cov kws sau ntawv feem ntau hais txog qaug zog tawg, vim nws pab kom yooj yim rau ib qho kev kawm uas tuaj yeem dhau los ua nyuaj heev.
SN nkhaus yog dab tsi?
A SN - Nkhaus (qee zaum sau S-NCUA ) yog ib daim phiaj ntawm qhov loj ntawm qhov kev hloov pauv kev ntxhov siab piv rau tus lej ntawm cov voj voog mus rau qhov tsis ua tiav rau cov khoom muab. Givena load sij hawm keeb kwm thiab a SN - Nkhaus , ib tus tuaj yeem siv Miner Txoj Cai los txiav txim siab txog kev puas tsuaj los yog qaug zog lub neej ntawm cov khoom siv tshuab.
Pom zoo:
Dab tsi yog qhov muaj zog thiab qaug zog acid piav nrog piv txwv?
Cov kua qaub muaj zog sib cais (sib cais) tag nrho hauv dej). Piv txwv li, HCl, cov kua qaub muaj zog yuav tawg mus rau H + thiab Cl-ions. Cov acids tsis muaj zog dissociate ib nrab hauv dej. Piv txwv li, HF, cov kua qaub tsis muaj zog, tsuas yog yuav muaj qee yam ntawm HF cov molecules sib cais thaum twg los tau
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
Puas yog ib txwm mus dhau qhov kev qaug dej qaug cawv?
Zoo, yog tias koj tau nrog koj lwm tus tseem ceeb ib ntus, cov lus teb luv luv yog: Yog. Cov ntawv qhuav qhuav yog qhov qub, thiab tsis muaj dab tsi los ntxhov siab txog. Obviously, hais tias yooj yim dua li ua, tab sis feem ntau, ib tug qhuav spell tsis yog ib txwm txhais tau tias koj thiab koj tus khub tsis muaj attraction rau ib leeg
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