Video: Puas muaj zog hauv paus muaj pH siab?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Zoo li muaj zog acids , a lub hauv paus muaj zog dissociates yuav luag tag nrho hauv dej; Txawm li cas los xij, nws tso tawm hydroxide (OH-) ions ntau dua li H+. Lub hauv paus muaj zog muaj heev siab pH tus nqi, feem ntau yog hais txog 12 txog 14.
Tsis tas li ntawd, cov hauv paus tsis muaj zog puas muaj pH siab?
Txij li thaum hauv paus yog proton txais, cov puag tau txais hydrogen ion los ntawm dej, H2O, thiab qhov seem H+ concentration nyob rau hauv cov tshuaj txiav txim pH . Tsis muaj zog hauv paus yuav muaj siab dua H+ concentration vim tias lawv tsis tshua muaj protonated ntau dua li muaj zog hauv paus thiab, yog li ntawd, ntau hydrogen ions tseem nyob hauv cov tshuaj.
Ib tug kuj yuav nug, dab tsi yog pH ntawm lub hauv paus muaj zog? Nyob rau hauv cov lus technical, cov kua qaub uas dissociates tag nrho rau hauv H + ions hauv dej yuav muaj qhov qis tshaj pH tus nqi, thaum lub puag dissociates kiag li rau hauv OH- ions hauv dej yuav muaj siab tshaj plaws pH tus nqi. Kho kom raug: Muaj zog tshaj acid muaj pH ntawm 1 thaum lub hauv paus muaj zog muaj pH ntawm 14.
Ib yam li ntawd, tib neeg nug, vim li cas cov hauv paus muaj pH siab?
Cov kua qaub yog Cov khoom uas muab hydrogen ions (H+) thiab qis dua pH , hos hauv paus muab hydroxide ions (OH–) thiab tsa pH . Qhov muaj zog cov kua qaub, qhov yooj yim dua nws pub H+.
Puas yog cov kua qaub muaj zog dua thaum pH siab dua lossis qis dua?
Tsawg pH tus lej txhais tau tias muaj zog acid , siab pH tus lej txhais tau tias muaj zog dua puag. Nws tuaj yeem ua rau me ntsis tsis meej pem, tab sis qis tus pH ntawm ib yam khoom yog, lub muaj zog dua ntawm ib kua qaub nws yog.
Pom zoo:
Koj puas ntxiv cov kua qaub rau hauv lub hauv paus lossis lub hauv paus rau cov kua qaub?
Ntxiv cov kua qaub ua kom cov concentration ntawm H3O + ions hauv cov tshuaj. Ntxiv ib lub hauv paus txo cov concentration ntawm H3O + ions hauv cov tshuaj. Cov kua qaub thiab lub hauv paus zoo li cov tshuaj tiv thaiv. Yog hais tias lub hauv paus yog ntxiv rau cov kua qaub, cov tshuaj yuav tsis acidic thiab txav mus rau nruab nrab ntawm pH nplai
Muaj pes tsawg guanine bases puas yog 50 lub hauv paus khub ob txoj hlua DNA 100 bases tag nrho muaj yog tias nws muaj 25 adenine bases?
Yog li, muaj tag nrho ntawm 25 + 25 = 50 adenine thiab thymine hauv tag nrho. Qhov ntawd tawm 100− 50 = 50 seem hauv paus. Nco ntsoov tias cytosine thiab guanine daim ntawv cog lus nrog ib leeg, thiab yog li lawv sib npaug ntawm cov nyiaj. Tam sim no peb tuaj yeem faib los ntawm 2 kom tau txais tus lej ntawm guanine lossis cytosine hauv paus
Puas muaj zog acid thiab qaug zog hauv paus ua rau tsis muaj?
Raws li koj tau pom hauv kev suav cov pH ntawm cov kev daws teeb meem, tsuas yog ib qho me me ntawm cov kua qaub uas muaj zog heev yog qhov tsim nyog los hloov pH. Ib qho tsis yog tsuas yog sib xyaw ntawm cov kua qaub tsis muaj zog thiab nws lub hauv paus conjugate lossis lub hauv paus tsis muaj zog thiab nws cov conjugate acid. Buffers ua hauj lwm los ntawm reacting nrog ib qho ntxiv acid los yog hauv paus tswj pH
Thaum twg muaj zog acid yog titrated nrog lub hauv paus tsis muaj zog?
Titration ntawm lub hauv paus tsis muaj zog nrog lub zog acid. Nyob rau hauv ib qho tsis muaj zog hauv paus-muaj zog acid titration, cov kua qaub thiab lub hauv paus yuav hnov mob los tsim cov kua qaub. Lub conjugate acid yuav raug tsim thaum lub sij hawm titration, uas tom qab ntawd reacts nrog dej los tsim hydronium ions. Qhov no ua rau muaj kev daws teeb meem nrog pH qis dua 7
Koj puas tuaj yeem muab lub voos xwmfab hauv paus los ntawm lub hauv paus square?
Cov Khoom Muag tau nce mus rau Txoj Cai Fais Fab yog qhov tseem ceeb vim tias koj tuaj yeem siv nws los faib cov lus qhia radical. Nco ntsoov tias cov hauv paus hniav zoo ib yam - koj tuaj yeem muab cov hauv paus plaub hau nrog cov hauv paus plaub hau, lossis cov hauv paus hniav nrog lub voos xwmfab, piv txwv li. Tab sis koj tsis tuaj yeem muab lub hauv paus square thiab lub voos xwmfab hauv paus siv txoj cai no