YBoric Acid vs Borax
Boron yog lub caij nrog lub cim B. Nws yog 5th lub caij nyob rau hauv lub sij hawm nrog lub teeb tsa hluav taws xob 1s2 2s2 2p1 Boron yog metalloid. Lub atomic loj ntawm boron yog 10.81. Qhov tseeb boron tsis muaj nyob ntawm nws tus kheej. Es tsis txhob, nws ua ke nrog oxygen los tsim boric acid, los yog nws ua ke nrog lwm yam xws li sodium los ua ntsev xws li borax. Boron yog ib qho tseem ceeb micronutrient tshwj xeeb tshaj yog rau cov nroj tsuag, thiab nws xav tau rau tib neeg ib yam nkaus.
NYIAJ Boric Acid
boric acid, uas yog cov khoom sib xyaw uas muaj boron, hydrogen, thiab oxygen, muaj cov mis molecular ntawm H 3 BO 3Nws yog qhia raws li B(OH)3too. Nws tseem hu ua boracic acid, orthoboric acid, thiab hydrogen borate. Qhov no yog ib qho kev sib xyaw ua ke. Boric acid muaj nyob rau hauv cov khoom siv lead ua, uas yog dawb. Nws kuj muaj xws li cov hmoov dawb thiab. Hauv cov siv lead ua, cov khaubncaws sab nraud povtseg ntawm B(OH) 3 tau tuav ua ke los ntawm hydrogen bonds. Lawv yog cov tsis muaj ntxhiab thiab tasteless. Boric acid yog cov kua qaub tsis muaj zog, thiab nws yaj hauv dej, tab sis boric acid tsis sib cais hauv dej thiab tso cov protons raws li Bronsted acid. Hloov chaw nws cuam tshuam nrog dej thiab tsim cov tetrahydroxyborate ion thiab ua raws li Lewis acid. Melting point ntawm boric acid yog 170.9 ° C, thiab boiling point yog 300 ° C. Boric acid yog ib txwm muaj nyob rau hauv feem ntau cov khoom noj. Feem ntau cov txiv hmab txiv ntoo, zaub, nplej, thiab txiv ntoo muaj ntau cov boron. Yog li boron, uas xav tau rau cov tsiaj, yog los ntawm kev noj haus. Boric acid yog tam sim no nyob rau hauv dej thiab av ib yam nkaus thiab. Yog li cov nroj tsuag tuaj yeem tau txais qhov xav tau ntawm boron los ntawm cov peev txheej no. Boric acid muaj nyob rau hauv cov cheeb tsam xws li Nevada, Lipari Islands uas muaj volcanic kev ua si. Nws tseem muaj nyob hauv cov zaub mov xws li borax, boracites thiab colemanite. Boric acid tuaj yeem npaj tau los ntawm borax, thiab nws tau npaj thawj zaug los ntawm Wilhelm Homberg. Boric acid yog siv los ua cov tshuaj tua kab mob hauv cov tshuaj los kho cov kab mob me me, txiav, pob txuv thiab lwm yam. Nws yog cov tshuaj tua kab uas paub zoo los tswj cov kab tsuag, hma, kab laum, thiab ntau lwm kab. Boric acid kuj tseem siv tau los ua cov nplaim hluav taws xob, neutron absorber lossis ua cov khoom ua ntej los tsim lwm cov tshuaj lom neeg.
Boax
Borax yog cov ntxhia uas yog sodium ntsev ntawm boron uas muaj cov khoom xyaw. Nws muaj cov qauv ntawm Na2B4O710H2 O. Nws tseem hu ua sodium tetraborate, disodium tetraborate lossis sodium borate. Cov ntxhia pob zeb yog ib qho khoom, mos siv lead ua. Txawm hais tias cov qauv qhia txog kaum dej molecules, tuaj yeem muaj cov muaju nrog rau ntau cov dej molecules. Lo lus "borax" yog siv los xa tag nrho cov tebchaw no. Txawm hais tias nws yog cov xim tsis muaj xim, qee zaum nws yuav muaj xim av, daj, lossis ntsuab xim. Borax yooj yim yaj hauv dej. Nws yog siv dav rau ntau yam kev siv. Piv txwv li, nws yog siv rau hauv xab npum, tshuaj pleev ib ce, thiab raws li ib tug hluav taws kub retardant, anti-fungal compound thiab lwm yam. Nws kuj yog siv los ua buffer tov nyob rau hauv biochemistry.
Dab tsi yog qhov txawv ntawm boric acid thiab borax?
• Borax yog sodium ntsev ntawm boric acid.
• borax yog cov ntxhia uas muaj dej molecules whereas boric acid tsis yog ntxhia.
• Boric acid tuaj yeem npaj los ntawm borax.
