Qhov sib txawv tseem ceeb ntawm electrochemical series thiab reactivity series yog tias electrochemical series muab qhov kev txiav txim ntawm tus qauv electrode muaj peev xwm, whereas reactivity series muab cov txheej txheem ntawm cov hlau nyob rau hauv tus nqi qis ntawm reactivity ntawm cov hlau.
Electrochemical series thiab reactivity series yog cov npe tseem ceeb ntawm cov tshuaj lom neeg; electrochemical series suav nrog cov khoom siv tshuaj lom neeg nrog cov peev txheej electrode, thaum cov tshuaj reactivity suav nrog cov hlau.
Electrochemical Series yog dab tsi?
Electrochemical series yog cov npe ntawm cov tshuaj lom neeg uas qhia qhov kev txiav txim ntawm lawv cov qauv electrode muaj peev xwm. Nws muab cov ntaub ntawv txaus txog cov txheeb ze reactivity ntawm cov hlau nyob rau hauv aqueous daws nyob rau hauv tus qauv tej yam kev mob. Lwm lub npe rau cov koob no yog "kev ua yeeb yam." Tsis tas li ntawd, cov koob no teev cov hlau kom txo qis kev ua haujlwm.
Nyob rau sab saum toj ntawm koob, nws muaj alkali hlau thiab alkaline ntiaj teb hlau. Cov no yog ntau reactive thiab yooj yim undergo oxidation dua hlau nyob rau hauv qab. Tsis tas li ntawd, lawv yooj yim hnov mob rau kev sib txuas. Cov hlau no yog li no hu ua "active metals."
Nyob hauv qab ntawm koob, muaj cov hlau hloov pauv. Lawv yog cov ruaj khov heev thiab tsis tsim cov tebchaw yooj yim. Piv txwv xws li tooj liab, kub, nyiaj, thiab lwm yam. Vim lawv tsis tshua muaj reactivity, peb feem ntau siv lawv los ua npib, hniav nyiaj hniav kub, thiab lwm yam., yog li peb hu lawv "noble metals."
Ntxiv mus, cov koob no muab cov khoom siv hluav taws xob ntawm cov khoom siv tshuaj, thiab cov npe tau npaj raws li tus qauv electrode muaj peev xwm. Peb tuaj yeem ntsuas tus nqi no los ntawm kev noj cov hlau tshwj xeeb raws li cathode thiab tus qauv hydrogen electrode raws li anode.
Reactivity Series yog dab tsi?
Reactivity series ntawm cov hlau kuj tseem hu ua cov haujlwm series, thiab nws piav qhia txog kev npaj ntawm cov hlau hauv qhov kev txiav txim qis ntawm cov reactivity ntawm cov hlau. Peb tuaj yeem siv cov ntsiab lus uas tau muab los ntawm kev ua haujlwm series los kwv yees lub peev xwm txav ntawm cov hlau. Hauv lwm lo lus, peb tuaj yeem txiav txim siab seb cov hlau puas tuaj yeem hloov tau lwm cov hlau hauv ib qho kev hloov pauv. Tsis tas li, peb tuaj yeem siv qhov kev ua haujlwm no kom tau txais cov ntaub ntawv ntawm cov hlau reactivity ntawm dej thiab acids.
Piv txwv li, hlau xws li potassium, sodium, lithium, thiab strontium react nrog dej, thiab hlau xws li magnesium, aluminium, manganese, zinc reacts nrog acids, whereas hlau xws li antimony, bismuth, mercury, thiab nyiaj yog heev. tsis ua haujlwm. Hauv cov koob no, hydrogen suav nrog, txawm hais tias nws tsis yog hlau vim nws yog siv los ua tus qauv rau kev sib piv.
Daim duab 01: Lub Reactivity ntawm Hlau hauv Dilute Sulfuric Acid
Ntxiv mus, cov hlau nyob rau sab saum toj ntawm koob yog cov muaj zog txo cov neeg ua haujlwm. Yog li ntawd, lawv yooj yim tau oxidized. Qhov no txhais tau tias cov hlau no tarnish yooj yim heev. Tsis tas li ntawd, qhov txo qis muaj peev xwm loj hlob tsis muaj zog thaum traversing down series. Tsis tas li ntawd, tag nrho cov hlau uas tshwm sim saum cov hydrogen hauv koob tuaj yeem tso cov pa roj hydrogen thaum reacting nrog dilute HCl los yog dilute sulfuric acid.
Qhov txawv ntawm Electrochemical Series thiab Reactivity Series yog dab tsi?
Electrochemical series thiab reactivity series yog cov npe tseem ceeb ntawm cov tshuaj lom neeg; electrochemical series suav nrog cov khoom siv hluav taws xob uas muaj peev xwm electrode, thaum cov tshuaj reactivity muaj xws li hlau. Qhov sib txawv tseem ceeb ntawm electrochemical series thiab reactivity series yog tias electrochemical series muab qhov kev txiav txim ntawm tus qauv electrode muaj peev xwm, whereas reactivity series muab cov txheej txheem ntawm cov hlau nyob rau hauv qhov kev txiav txim nqis los ntawm reactivity ntawm cov hlau.
Cov hauv qab no infographic nthuav tawm qhov sib txawv ntawm electrochemical series thiab reactivity series nyob rau hauv daim ntawv tabular rau ib sab ntawm kev sib piv.
Summary – Electrochemical Series vs Reactivity Series
Electrochemical series yog cov npe ntawm cov tshuaj lom neeg uas qhia qhov kev txiav txim ntawm cov qauv electrode muaj peev xwm ntawm lawv. Reactivity series ntawm cov hlau kuj tseem hu ua cov haujlwm series thiab piav qhia txog cov txheej txheem ntawm cov hlau hauv qhov kev txiav txim qis ntawm cov reactivity ntawm cov hlau. Qhov sib txawv tseem ceeb ntawm electrochemical series thiab reactivity series yog cov electrochemical series muab qhov kev txiav txim ntawm tus qauv electrode muaj peev xwm, whereas reactivity series muab cov kev npaj ntawm hlau nyob rau hauv tus nqi qis ntawm reactivity ntawm cov hlau.
