Faraday tas li: txhua yam koj xav paub txog kev them nqi hluav taws xob

Faraday qhov tsis tu ncua

Raws li lwm lub sijhawm peb tau tawm tswv yim txog lwm cov lus nug tseem ceeb hauv kev siv hluav taws xob thiab hluav taws xob, xws li Ohm txoj cai, vuag Kirchoff txoj cai, thiab tseem muaj hom kev siv hluav taws xob yooj yim, nws tseem yuav nthuav kom paub tias nws yog dab tsi Faraday qhov tsis tu ncua, raws li nws tuaj yeem pab koj kom paub me ntsis ntxiv txog kev thauj khoom.

Hauv kab lus no koj yuav nkag siab me ntsis zoo dua dab tsi yog qhov zoo siab tas li, nws tuaj yeem thov rau dab tsi, thiab nws suav li cas ...

Dab tsi yog qhov Faraday tas li?

Michael Faraday

La Faraday qhov tsis tu ncua nws yog qhov siv dav siv tas li hauv kev tshawb fawb txog physics thiab chemistry. Nws tau txhais raws li tus nqi hluav taws xob ib mole ntawm electrons. Nws lub npe los ntawm tus kws tshawb fawb Askiv Michael Faraday. Qhov tsis tu ncua no tuaj yeem siv hauv cov tshuab hluav taws xob hluav taws xob los xam qhov hnyav ntawm cov khoom uas tsim hauv cov hluav taws xob.

Nws tuaj yeem sawv cev los ntawm tsab ntawv F, thiab tau hais tseg tias yog qhov them nqi qis hauv lub cev, muaj peev xwm suav Xws li:

mis

Ua F qhov txiaj ntsig tshwm sim ntawm Farday qhov tsis tu ncua, e tus nqi hluav taws xob tseem ceeb, thiab Na yog Avogadro qhov tsis tu ncua:

  • e = 1.602176634 × 10-19 C
  • NPVA = 6.02214076 × 1023  mole-1

Raws li SI qhov Faraday qhov niaj hnub no yog qhov tseeb, zoo li lwm qhov tsis tu ncua, thiab nws qhov txiaj ntsig zoo yog: 96485,3321233100184 C / mol. Raws li koj tuaj yeem pom, nws tau hais tawm hauv chav C / mol, uas yog, coulombs ib mole. Thiab kom nkag siab cov chav no yog dab tsi, yog tias koj tseem tsis tau paub, koj tuaj yeem txuas ntxiv nyeem ob ntu tom ntej ...

Dab tsi yog mole?

loj atom

Un mole yog chav tsev uas ntsuas tus nqi ntawm cov khoom. Hauv SI ntawm chav nyob, nws yog ib qho ntawm 7 qhov tseem ceeb. Hauv ib qho tshuaj twg, nws yog lub hauv paus lossis cov tshuaj sib xyaw, muaj cov chav ntawm cov hauv paus uas tsim nws. Ib mole yuav sib npaug rau 6,022 140 76 × 1023 cov hauv paus tseem ceeb, uas yog tus lej zauv ruaj khov ntawm Avogadro qhov tsis tu ncua.

Cov koom haum tseem ceeb no tuaj yeem yog atom, molecule, ion, electron, photons, lossis lwm yam ntawm cov khoom me me. Piv txwv li, nrog qhov no koj tuaj yeem ua tau xam tus naj npawb ntawm atoms dab tsi yog hauv gram ntawm cov khoom muab.

Nyob hauv kev ua txhob ua si, mole yog qhov tseem ceeb, txij li nws tso cai rau ntau qhov kev suav los ua rau kev sib xyaw, tshuaj lom neeg, thiab lwm yam. Piv txwv, rau dej (H.2O), koj muaj cov tshuaj tiv thaiv 2 H2 + O2 → 2 H.2O, uas yog, tias ob lub moles ntawm hydrogen (H2) thiab ib mole ntawm cov pa (O2) hnov ​​mob los ua ob lub moles dej. Tsis tas li ntawd, lawv kuj tseem tuaj yeem siv los qhia kev mloog zoo (saib molarity).

Tus nqi hluav taws xob yog dab tsi?

nqi hluav taws xob

Ntawm qhov tod tes, los ntawm nqi hluav taws xob Peb twb tau hais txog lwm lub sijhawm, nws yog lub cev ntawm lub cev ntawm qee qhov subatomic hais uas ua rau pom qhov ntxim nyiam thiab qias neeg ntawm lawv vim yog thaj chaw hluav taws xob. Kev sib cuam tshuam hluav taws xob, ntawm tus nqi thiab lub teb hluav taws xob, yog ib qho ntawm 4 qhov kev cuam tshuam tseem ceeb hauv kev siv lub cev, nrog rau lub zog nuclear muaj zog, lub zog nuclear tsis muaj zog, thiab lub zog nqus.

Txhawm rau ntsuas qhov nqi hluav taws xob no, Coulomb (C) lossis Coulomb, thiab tau piav qhia tias yog tus nqi them nyob hauv ib pliag los ntawm hluav taws xob tam sim no ntawm kev siv zog ib ampere.

Cov ntawv thov ntawm Faraday tas li

Faraday qhov tsis tu ncua

Yog koj xav paub dab tsi daim ntawv thov tswv yim Koj tuaj yeem muaj qhov Faraday tas li, qhov tseeb yog tias koj muaj ob peb heev, qee qhov piv txwv yog:

  • Electroplating / anodizing: rau cov txheej txheem hauv kev lag luam hlau uas ib qho hlau tau npog nrog lwm los ntawm electrolysis. Piv txwv li, thaum cov hlau tau galvanized nrog txheej zinc kom muab nws tiv taus ntau dua rau xeb. Hauv cov txheej txheem no, cov hlau uas yuav tsum tau coated yog siv los ua anode thiab cov electrolyte yog cov ntsev ntsev ntawm cov khoom siv anode.
  • Hlau ua kom huv: nws kuj tseem tuaj yeem siv rau cov qauv siv rau kev kho kom zoo ntawm cov hlau xws li tooj liab, zinc, tin, thiab lwm yam. Kuj los ntawm cov txheej txheem electrolysis.
  • Kev tsim tshuaj lom neeg: los tsim cov tshuaj sib xyaw ua ntu zus no kuj tseem siv tau.
  • Tshuaj tshuaj: los ntawm electrolysis cov tshuaj lom neeg kuj tseem tuaj yeem txiav txim siab.
  • Kev tsim roj: cov pa roj av xws li oxygen lossis hydrogen uas tau los ntawm dej los ntawm electrolysis kuj tseem siv qhov no tsis tu ncua rau kev suav.
  • Tshuaj thiab kev zoo nkaujElectrolysis kuj tseem tuaj yeem siv los txhawb qee yam qab haus huv lossis kho qee yam teeb meem, ntxiv rau tshem tawm cov plaub hau tsis xav tau. Yog tsis muaj qhov tas li, coob leej ntawm cov cuab yeej ntawm hom no tsis tuaj yeem tsim.
  • sau: Rau cov tshuab luam ntawv, cov txheej txheem hluav taws xob kuj tseem siv rau qee yam.
  • Electrolytic capacitors: cov khoom siv hluav taws xob paub zoo suav nrog cov yeeb yaj kiab nyias ntawm aluminium oxide thiab aluminium anode nruab nrab ntawm cov hluav taws xob. Cov electrolyte yog sib xyaw ntawm boric acid, glycerin, thiab ammonium hydroxide. Thiab qhov no yog yuav ua li cas cov peev txheej loj tau ua tiav ...

Electrolysis yog dab tsi?

electrolysis

Thiab txij li Faraday tsis tu ncua muaj feem cuam tshuam nrog rau electrolysisCia peb pom tias lwm lo lus twg yog qhov uas tau siv ntau hauv kev lag luam. Ua tsaug rau cov txheej txheem no, cov khoom sib xyaw tuaj yeem sib cais los ntawm kev siv hluav taws xob. Qhov no yog ua tiav los ntawm kev tso tawm hluav taws xob los ntawm anode anions (oxidation) thiab ntes cov electrons los ntawm cathode cations (txo).

Nws tau pom tshwm sim los ntawm William Nicholson, xyoo 1800, thaum kawm txog kev ua haujlwm ntawm roj teeb tshuaj. Xyoo 1834, Michael Faraday tsim thiab tshaj tawm txoj cai ntawm electrolysis.

Piv txwv li, electrolysis ntawm dej H2O, tso cai tsim cov pa thiab hydrogen. Yog tias tam sim no siv ncaj qha los ntawm cov electrodes, uas yuav cais cov pa oxygen los ntawm hydrogen, thiab tuaj yeem cais ob lub nkev (lawv tsis tuaj yeem sib chwv, vim lawv tsim cov tshuaj tiv thaiv txaus ntshai heev).


Cov ntsiab lus ntawm tsab xov xwm ua raws li peb cov ntsiab cai ntawm kev tswj hwm kev ncaj nceesCov. Tshaj tawm ib qho yuam kev nyem no.

Yog thawj tus tuaj tawm tswv yim

Tso koj saib

Koj email chaw nyob yuav tsis tsum luam tawm. Yuav tsum tau teb cov cim nrog *

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  1. Lub luag haujlwm rau cov ntaub ntawv: Miguel Ángel Gatón
  2. Lub hom phiaj ntawm cov ntaub ntawv: Tswj SPAM, kev tswj xyuas tawm tswv yim.
  3. Sau raws cai: Koj kev tso cai
  4. Kev sib txuas lus ntawm cov ntaub ntawv: Cov ntaub ntawv yuav tsis raug xa mus rau lwm tus neeg thib peb tsuas yog los ntawm kev txiav txim siab raug cai.
  5. Cov ntaub ntawv khaws cia: Cov Ntaub Ntawv khaws tseg los ntawm Occentus Networks (EU)
  6. Txoj Cai: Txhua lub sijhawm koj tuaj yeem txwv, rov qab thiab tshem tawm koj cov ntaub ntawv.