Qhov sib txawv tseem ceeb ntawm boron thiab borax yog tias boron yog cov tshuaj lom neeg thaum lub borax yog cov tshuaj lom neeg. Ntxiv mus, borax yog ib qho chaw uas muaj boron, thiab nws yog cov ntxhia.
Txawm hais tias cov npe boron thiab borax suab ze ze, lawv txawv ntawm ib leeg raws li cov tshuaj lom neeg. Cia peb tham ntxiv txog lawv.
Boron yog dab tsi?
Boron yog cov khoom siv tshuaj muaj lub cim B thiab atomic tooj 5. Nws qhov kev nplua nuj nyob hauv lub ntiaj teb lub pob zeb yog tsawg heev, thiab nws yog ib qho kab nyob hauv lub hnub ci thiab. Nws yog metalloid thiab feem ntau ntawm lub sijhawm, thiab nws tsis tshwm sim. Ntxiv mus, boron yog nyob rau hauv pawg 13 thiab lub sij hawm 2 ntawm lub sij hawm. Yog li ntawd, nws yog thawj tus tswv cuab ntawm p Block. Qhov no yog vim nws muaj ib qho hluav taws xob hauv 2p orbital. Ntawm tus qauv siab thiab qhov kub thiab txias, nws tshwm sim raws li cov khoom. Lub melting point thiab boiling point yog 2076 ° C thiab 3927 ° C raws.
Daim duab 01: Boron Molecular Structures
Boron tuaj yeem tsim cov tes hauj lwm molecular zoo ib yam li carbon. Cov qauv no muaj covalent bonds ntawm boron atoms. Cov qauv no yog cov allotropes ntawm boron. Cov cwj pwm tshuaj lom neeg ntawm cov khoom no zoo li silicon. Crystalline boron yog heev unreactive; yog li nws tsis hnov mob HF lossis HCl thaum cua sov. Ntxiv mus, boron tsim oxides, sulfides, nitrides thiab halides nrog nws cov feem ntau oxidation xeev; + 3 lub xeev oxidation.
Borax yog dab tsi?
Borax yog ib qho inorganic compound uas muaj cov tshuaj formula Na 2B4O7· 10H2O. Nws yog ntsev ntawm boric acid. Nws tshwm sim raws li cov khoom dawb muaj cov mos mos, tsis muaj xim muaju. Cov crystals no yog dej soluble. Feem ntau, qhov sib xyaw no tshwm sim raws li daim ntawv decahydrate. Lub npe IUPAC ntawm cov tshuaj no yog Sodium tetraborate decahydrate. Cov molar loj ntawm daim ntawv decahydrate yog 381.4 g / mol. Lub melting point thiab boiling point yog 743 ° C thiab 1, 575 ° C raws.
Daim duab 02: Borax Crystals
Lub npe borax yog hais txog cov khoom sib txuas uas suav nrog cov ntaub ntawv tsis muaj dej thiab dej ntawm borax. Piv txwv li: pentahydrate daim ntawv, daim ntawv decahydrate. Nws reacts nrog HCl acid tsim boric acid.
Na2B4O7·10H2 O + 2 HCl → 4 H3BO3 + 2 NaCl + 5 H2 O
Qhov sib xyaw no tshwm sim hauv cov evaporite deposits; cov deposits tsim vim rov evaporation ntawm lub caij nyoog pas dej. Peb tuaj yeem kho qhov sib xyaw no ntawm recrystallization. Ntxiv rau qhov ntawd, qhov sib xyaw no muaj txiaj ntsig zoo li tus neeg saib xyuas tu, ua cov buffers, ua qhov chaw ntawm borate ions los ua tus neeg sawv cev sib koom ua ke, thiab lwm yam.
Qhov txawv ntawm Boron thiab Borax yog dab tsi?
Boron yog ib yam tshuaj muaj cov cim B thiab atomic tooj 5 thaum Borax yog ib qho inorganic compound uas muaj cov tshuaj formula Na2B4 O7·10H2O. Yog li, qhov sib txawv tseem ceeb yog tias boron yog cov khoom siv tshuaj thaum borax yog cov tshuaj lom neeg. Ntxiv mus, lub melting point thiab boiling point ntawm boron yog 2076 ° C thiab 3927 ° C feem. Ntawm qhov tod tes, lub melting point thiab boiling point ntawm borax yog 743 ° C thiab 1, 575 ° C feem. Cov nram qab no infographic nthuav qhia ntau ntxiv txog qhov sib txawv ntawm boron thiab borax.
Summary – Boron vs Borax
Borax yog ib qho sib xyaw ntawm boron. Txawm li cas los xij, lawv txawv ntawm ib leeg hauv cov tshuaj lom neeg. Qhov sib txawv tseem ceeb ntawm boron thiab borax yog tias boron yog cov tshuaj lom neeg thaum lub borax yog cov tshuaj lom neeg.
