Qhov sib txawv tseem ceeb ntawm chromic acid thiab chromium trioxide yog tias chromic acid yog cov kua qaub uas muaj zog heev uas yog tsim los ntawm kev sib txuas cov concentrated sulfuric acid nrog dichromate, whereas chromium trioxide yog acidic anhydride ntawm chromic acid.
Chromic acid thiab chromium trioxide yog ob yam khoom muaj feem xyuam; chromic acid tuaj yeem tsim los ntawm hydration ntawm chromium trioxide. Cov no yog cov tshuaj inorganic uas muaj cov tshuaj chromium.
Chromic Acid yog dab tsi?
Chromic acid yog cov kua qaub uas muaj zog muaj H2CrO4 molecules. Txawm li cas los xij, cov kua qaub no feem ntau yog npaj los ntawm kev sib xyaw ntawm sulfuric acid thiab dichromate. Yog li ntawd, cov kua qaub no yuav muaj ntau yam sib txuas, nrog rau cov khoom chromium trioxide. Cov kua qaub no muaj zog muaj txiaj ntsig zoo hauv kev ntxuav cov khoom siv iav. Lub chromium atom nyob rau hauv molecular chromic acid yog nyob rau hauv lub +6 oxidation xeev. Cov kua qaub no suav hais tias yog cov kua qaub uas muaj zog thiab corrosive heev.
Feem ntau, chromic acid tuaj yeem pom raws li cov xim liab tsaus. Cov molecular chromic acid muaj cov yam ntxwv zoo nrog sulfuric acid molecules. Lawv muaj cov qauv deprotonation zoo sib xws thiab muaj zog acidic.
Chromic acid yog ib qho tseem ceeb oxidizing tus neeg sawv cev, thiab nws muaj peev xwm oxidize organic tebchaw xws li cawv rau carboxylic acids thiab ketones, thawj thiab theem nrab alcohols rau coj aldehydes thiab ketones, thiab lwm yam.
Daim duab 01: Chromic Acid
Thaum xav txog kev siv cov kua qaub no, nws yog ib qho tseem ceeb raws li qhov nruab nrab ntawm cov txheej txheem chromium plating, muaj txiaj ntsig zoo hauv ceramic glaze thiab cov iav xim, ua tus neeg sawv cev muaj zog oxidizing, muaj txiaj ntsig zoo hauv chav kuaj iav, hauv cov khoom siv suab paj nruag. kho kev lag luam vim nws muaj peev xwm ua kom cov khoom siv dag zog, muaj txiaj ntsig zoo hauv kev tsim cov plaub hau dyes, ua cov tshuaj dawb hauv cov xim dub thiab dawb cov duab thim rov qab, thiab lwm yam.
Chromium Trioxide yog dab tsi?
Chromium trioxide yog ib qho inorganic compound uas muaj cov tshuaj formula CrO3. Nws yog acidic anhydrous daim ntawv ntawm chromic acid. Yog li ntawd, ob qho tib si cov tshuaj no qee zaum muaj nyob rau hauv kev ua lag luam raws li tib lub npe. Peb tuaj yeem soj ntsuam cov khoom no raws li qhov tsaus ntuj, cov xim liab-xim daj nyob rau hauv nws cov dej tsis muaj dej, thiab thaum cov khoom hydrated, nws tshwm hauv cov xim txiv kab ntxwv. Cov tshuaj no yog npaj tsuas yog rau cov txheej txheem electroplating. Ntxiv mus, chromium trioxide yog lub zog oxidizer heev; yog li ntawd, nws kuj yog ib tug carcinogen.
Daim duab 02: ntub dej Chromium Trioxide
Ntxiv rau cov txheej txheem chrome plating, muaj lwm yam kev siv chromium trioxide xws li tiam ntawm passivated chromate films uas tiv taus corrosion, pab tau nyob rau hauv zus tau tej cov hluavtaws rubies, pab nyob rau hauv siv hom anodic txheej rau aluminium, thiab lwm yam.
Qhov txawv ntawm Chromic Acid thiab Chromium Trioxide yog dab tsi?
Chromic acid yog cov kua qaub uas muaj zog muaj H2CrO4 molecules. Chromium trioxide yog ib qho inorganic compound uas muaj cov tshuaj formula CrO3. Chromic acid thiab chromium trioxide yog inorganic compounds. Qhov sib txawv tseem ceeb ntawm chromic acid thiab chromium trioxide yog tias chromic acid yog cov tshuaj acidic uas yog tsim los ntawm kev sib txuas cov concentrated sulfuric acid nrog dichromate, thaum chromium trioxide yog acidic anhydride ntawm chromic acid.
Hauv qab infographic teev ntau qhov sib txawv ntawm chromic acid thiab chromium trioxide.
Summary – Chromic Acid vs Chromium Trioxide
Chromic tuaj yeem npaj tau los ntawm hydration ntawm chromium trioxide. Qhov sib txawv tseem ceeb ntawm chromic acid thiab chromium trioxide yog tias chromic acid yog cov tshuaj acidic uas yog tsim los ntawm kev sib txuas cov concentrated sulfuric acid nrog dichromate, whereas chromium trioxide yog acidic anhydride ntawm chromic acid.
