Txhua leej txhua tus paub yuav ua li cas koj tuaj yeem ua roj teeb los ntawm txiv qaub. Koj tseem tuaj yeem ua roj teeb los ntawm cola lossis dej ntsev. Qhov teeb meem yog, cov roj teeb no muaj hluav taws xob tsawg. Koj tuaj yeem ua lub roj teeb hluav taws xob siab siv hluav taws xob.
Cov kauj ruam
Ntu 1 ntawm 5: Tau Txais Cov Ntaub Ntawv
Kauj Ruam 1. Sau koj cov ntaub ntawv
Koj yuav xav tau: ob lub iav tsom iav, lim cov ntawv thiab cov poov tshuaj nitrate rau cov ntsev ntsev, txhuas ntawv ci thiab ib qho molar aluminium nitrate tov rau cov hlau tsis zoo, cov xov hlau thiab cov kais dej. Cov ntaub ntawv rau qhov zoo electrode sib txawv. Koj kuj tseem yuav xav tau ib yam dab tsi los ua lub luag haujlwm hauv Circuit Court, zoo li lub teeb ci.
Ib qho molar = ib mole rau ib liter
Ntu 2 ntawm 5: Npaj Ntsev Choj
Kauj Ruam 1. Dhuav cov poov tshuaj nitrate hauv dej los ua cov tshuaj
Kauj Ruam 2. Txiav ib daim ntawv lim ntawv
Kauj Ruam 3. Tsau daim ntawv lim nrog cov tshuaj
Kauj Ruam 4. Muab ob lub beakers nyob ib sab
Khoov daim ntawv lim kom nws kov hauv qab ntawm ob lub beakers.
Ntu 3 ntawm 5: Npaj Tsis Zoo Ib Nrab-Cell
Kauj Ruam 1. Ntxiv cov tshuaj txhuas nitrate rau ib qho ntawm cov beakers
Kauj Ruam 2. Muab ib daim kab xev ntawm txhuas ntawv ci tso rau hauv cov tshuaj
Cov hlua yuav tsum kov hauv qab ntawm lub beaker. Nws yuav tsum tsis txhob kov tus choj ntsev. Koj tuaj yeem xav khoov sab saum toj ntawm kab txaij hla ntawm lub beaker. Aluminium sawb no yog electrode.
Koj tau tsim Al3+/Al ib nrab ntawm tes
Ntu 4 ntawm 5: Npaj Qhov Zoo Ib Nrab Ntawm Cell
Siv Cu2+/Cu
Kauj Ruam 1. Sau koj cov khoom siv
Koj yuav xav tau: ib txoj hlua tooj liab thiab qee yam tooj liab tooj liab nitrate tov.
Kauj Ruam 2. Ntxiv cov tooj liab nitrate tov rau lub beaker thib ob
Kauj Ruam 3. Muab cov hlua tooj liab tso rau hauv lub beaker thib ob
Nws yuav tsum kov hauv qab, tab sis tsis yog tus choj ntsev. Qhov no yog qhov zoo electrode.
Lub xov tooj ntawm tes no muaj qhov hluav taws xob ntawm 1.821V
Siv Fe3+/Fe2+
Kauj Ruam 1. Sau koj cov khoom siv
Koj yuav xav tau: ib tus hlau molar (III) nitrate (Fe (NO3) 3) kev daws teeb meem, ib tus hlau molar (II) nitrate (Fe (NO3) 2) daws, thiab tus pas nrig uas siv tau.
Kauj Ruam 2. Ntxiv qhov sib npaug ntawm txhua qhov ntawm cov hlau nitrates rau lub beaker thib ob
Kauj Ruam 3. Muab tus pas nrig graphite tso rau hauv lub khob dej
Nws yuav tsum tsis txhob kov tus choj ntsev. Qhov no yog qhov zoo electrode.
Lub xov tooj ntawm tes no muaj qhov hluav taws xob ntawm 2.432V
Siv Cr2O7 2-+ 14H+/Cr3+
Kauj Ruam 1. Tau txais cov khoom siv rau ntu no
Koj yuav xav tau: ib qho poov tshuaj poov tshuaj dichromate daws, ib qho molar nitric acid, ib qho molar chromium nitrate tov, thiab cov khoom siv hluav taws xob graphite.
Kauj Ruam 2. Mus rau lub beaker thib ob, ntxiv:
ib qho kev ntsuas ntawm potassium dichromate daws, ob qhov ntsuas ntawm chromium nitrate tov, thiab ntau tshaj (> 14 ntsuas) ntawm nitric acid. Ib qho kev ntsuas yuav tsum yog tus nqi ntau tshaj plaws uas koj tuaj yeem ntxiv yam tsis muaj lub raj mis dej ntau dhau tom qab txhua yam ntxiv.
Kauj Ruam 3. Ntxiv cov pas nrig graphite
Nws yuav tsum tsis txhob kov tus choj ntsev. Qhov no yog qhov zoo electrode.
Lub xov tooj ntawm tes no muaj qhov hluav taws xob ntawm 2.992V
Siv MnO4-+ 8H+/Mn2+
Kauj Ruam 1. Sau cov khoom siv raug
Koj yuav xav tau: ib tus poov tshuaj poov tshuaj permanganate tov, ib tus poov tshuaj nitric acid, ib tus molar manganese nitrate tov, thiab tus pas nrig graphite.
Kauj Ruam 2. Mus rau lub beaker thib ob, ntxiv:
ib qho kev ntsuas ntawm cov tshuaj potassium permanganate daws, ib qho kev ntsuas ntawm manganese nitrate, thiab ntau tshaj (> 8 ntsuas) ntawm nitric acid. Ib qho kev ntsuas yuav tsum yog tus nqi ntau tshaj plaws uas koj tuaj yeem ntxiv yam tsis muaj lub raj mis dej ntau dhau tom qab txhua yam ntxiv.
Kauj Ruam 3. Ntxiv cov pas nrig graphite
Nws yuav tsum tsis txhob kov tus choj ntsev. Qhov no yog qhov zoo electrode.
Lub xov tooj ntawm tes no muaj qhov hluav taws xob ntawm 3.172V
Ntu 5 ntawm 5: Ua kom tiav Circuit Court
Kauj Ruam 1. Txuas cov xov hlau rau txhua qhov hluav taws xob
Kauj Ruam 2. Txuas cov xov hlau no mus rau hauv Circuit Court (teeb pom kev zoo)
Lub teeb yuav tsum ci.
