Video: Puas yog baoh2 lub hauv paus muaj zog?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Solubility ntawm Ba (OH)2 ntau dua Sr (OH)2. Yog li mas OH- tus nqi yuav muab los ntawm Ba (OH)2 mus rau aqueous tov. Yog li ntawd, Ba (OH)2 yog a lub hauv paus muaj zog thanSr(OH)2.
Khaws qhov no los xav txog, puas yog baoh2 lub hauv paus?
Yog li ntawd, qhov concentration ntawm hydroxide ions nyob rau hauv ib qho kev daws teeb meem yooj yim yog sib npaug ntawm cov undissociated puag . Cov piv txwv ntawm muaj zog Arrhenius hauv paus yog cov hydroxides ntawm alkali hlau thiab alkaline ntiaj teb hlau xws li NaOH thiab Ca (OH)2. Barium hydroxide ( Ba (OH)2 ) Cesium hydroxide (CsOH)
Ib tug kuj yuav nug, yog LiOH lub hauv paus muaj zog? alkali hlau daim ntawv lub hauv paus muaj zog thiab ntawm qhov tod tes, hydroxides yog ib qho ntawm cov anions muaj zog tshaj plaws. yog li ntawd, LiOH yog qhov chaw nyob nruab nrab muaj zog thiab qaug zog puag.
Kuj Paub, yog caoh2 lub hauv paus muaj zog?
Ib txhia lub hauv paus muaj zog zoo li calcium hydroxide tsis solublein dej heev. Qhov ntawd tsis muaj teeb meem - dab tsi yaj yog tseem 100% ionised rau hauv calcium ions thiab hydroxide ions. Calcium hydroxide tseem suav tias yog a lub hauv paus muaj zog vim tias 100% ionization.
Dab tsi txiav txim siab lub zog ntawm lub hauv paus?
Qhov siab dua qhov dissociation tas li lub zog theacid lossis puag . Txij li thaum electrolytes raug tsim raws li ions yog freed rau hauv kev daws muaj kev sib raug zoo ntawm cov zog ib acid, a puag , thiab cov electrolyte nws tsim. Acids thiab hauv paus yog ntsuas los ntawm pHscale.
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
Puas yog lub zog hauv daim ntawv ntawm kev txav yog lub zog muaj peev xwm?
Lub zog nyob rau hauv daim ntawv ntawm kev txav yog 'muaj peev xwm' zog. Qhov ntau dua 'mas' ib qho khoom txav muaj, lub zog kinetic nws muaj. Lub pob zeb ntawm ntug pob tsuas muaj 'kinetic' zog vim nws txoj hauj lwm. 'Thermal' zog yog lub zog khaws cia los ntawm cov khoom uas ncab los yog compression