Qhov sib txawv tseem ceeb ntawm Latimer daim duab thiab Frost daim duab yog tias Latimer daim duab qhia txog cov txheej txheem electrode muaj peev xwm ntawm cov tshuaj lom neeg thaum Frost daim duab qhia txog cov txheeb ze ruaj khov ntawm cov oxidation sib txawv ntawm ib yam khoom.
Daim duab Latimer thiab Frost daim duab yog qhov tseem ceeb hauv kev qhia cov ntsiab lus ntawm cov tshuaj tiv thaiv redox. Tsis tas li ntawd, cov duab kos tau muab lub npe los ntawm cov kws tshawb fawb uas tau tsim los ntawm lawv; Daim duab Latimer tau txais nws lub npe los ntawm Wendell Mitchell Latimer thaum Frost daim duab muaj npe tom qab Arthur Atwater Frost.
Latimer Diagram yog dab tsi?
Latimer daim duab yog cov ntsiab lus ntawm tus qauv electrode muaj peev xwm ntawm ib lub caij. Daim duab kos npe hu ua American Chemist Wendell Mitchell Latimer. Thaum tsim cov duab kos duab zoo li no, peb yuav tsum sau daim ntawv oxidized heev ntawm cov tshuaj nyob rau sab laug. Tom qab ntawd peb tuaj yeem sau cov oxidation xeev nyob rau hauv nqes mus rau sab laug - lub ces kaum sab laug yuav muaj tsawg kawg nkaus oxidation xeev. Nyob nruab nrab ntawm cov oxidation xeev, peb siv ib tug xub (xub taub hau rau sab laug). Ntxiv mus, nyob rau sab saum toj ntawm tus xub, peb yuav tsum sau tus qauv electrode muaj peev xwm rau cov tshuaj tiv thaiv ntawm kev hloov pauv ntawm oxidation xeev ntawm sab xis mus rau sab laug. Piv txwv li,
Daim duab 01: Daim duab Latimer Qhia qhov txawv Oxidation States ntawm Oxygen Atom
Cov khoom siv tshuaj uas peb xav hauv qhov piv txwv saum toj no yog oxygen. Nws muaj cov tshuaj lom neeg hauv qab no nrog rau oxidation xeev ntawm oxygen:
- O2 - oxidation xeev yog xoom
- H2O2 - oxidation lub xeev ntawm oxygen yog -1
- H2O - oxidation lub xeev ntawm oxygen yog -2
Daim duab Latimer yog qhov tseem ceeb hauv kev tsim daim duab Frost vim peb tuaj yeem tau txais cov khoom siv hluav taws xob ntawm cov kauj ruam uas tsis nyob ib sab ntawm cov tshuaj tiv thaiv uas tsim nyog rau kev txhim kho Frost daim duab. Tsis tas li ntawd, nws yog ib qho tseem ceeb hauv kev qhia seb puas muaj qee yam tshuaj lom neeg raug deprotonation nyob rau hauv cov xwm txheej uas lub peev xwm electrode tau muab.
Frost Diagram yog dab tsi?
Frost daim duab yog ib qho piv txwv uas qhia txog kev ruaj ntseg ntawm cov oxidation sib txawv ntawm ib yam khoom. Nws yog ib qho tseem ceeb hauv inorganic chemistry thiab electrochemistry. Tsis tas li ntawd, nws yog ib daim duab, thiab nws muaj lub xeev oxidation ntawm x-axis thiab lub zog dawb ntawm y-axis. Ntawm no, daim duab nyob ntawm pH. Yog li peb yuav tsum suav nrog pH uas peb ntsuas. Peb tuaj yeem txiav txim siab lub zog pub dawb siv oxidation-txo ib nrab-reactions. Ntxiv mus, peb tuaj yeem txiav txim siab qhov txo qis tau yooj yim siv daim duab no ntau dua li siv daim duab Latimer.
Daim duab 02: Daim duab Frost
Thaum tsim daim duab, peb yuav tsum kos lub xeev oxidation ntawm x-axis thiab lub zog dawb ntawm y-axis nrog xoom hauv nruab nrab. Vim hais tias, lub zog pub dawb muaj qhov tsis zoo thiab qhov zoo. Tsis tas li ntawd, txoj kab nqes ntawm daim duab qhia tau hais tias tus qauv electrode muaj peev xwm ntawm ob lub xeev oxidation.
Qhov txawv ntawm Latimer Diagram thiab Frost Diagram yog dab tsi?
Daim duab Latimer thiab Frost daim duab yog qhov tseem ceeb hauv kev txiav txim siab txog oxidation thiab txo qis hauv cov tshuaj tiv thaiv redox. Txawm li cas los xij, qhov sib txawv tseem ceeb ntawm daim duab Latimer thiab Frost daim duab yog tias Latimer daim duab qhia txog cov qauv electrode muaj peev xwm ntawm cov khoom siv tshuaj, tab sis daim duab Frost qhia txog cov txheeb ze ruaj khov ntawm cov oxidation sib txawv ntawm ib yam khoom.
Hauv qab infographic qhia txog qhov sib txawv ntawm daim duab Latimer thiab Frost daim duab hauv daim duab.
Summary – Latimer Diagram vs Frost Diagram
Txhua yam, Latimer daim duab thiab Frost daim duab pab peb txiav txim siab cov ntaub ntawv hais txog oxidation thiab txo cov tshuaj tiv thaiv redox. Tab sis, qhov sib txawv tseem ceeb ntawm daim duab Latimer thiab Frost daim duab yog tias Latimer daim duab qhia txog cov txheej txheem electrode muaj peev xwm ntawm cov khoom siv tshuaj, thaum Frost daim duab qhia txog qhov txheeb ze ruaj khov ntawm cov oxidation sib txawv ntawm ib yam khoom..
