Faraday mau: nā mea āpau āu e ʻike ai e pili ana i ka hoʻoila uila

Ko Faraday paʻa mau

E like me nā manawa ʻē aʻe ua ʻōlelo mākou e pili ana i nā nīnau ʻano nui ʻē aʻe i ke kahua uila a me ka uila, e like me ka Kānāwai ʻo Ohm, nalu Nā kānāwai o Kirchoff, a ʻo ka ʻano o nā kaapuni uila maʻamau, he mea hoihoi paha ia e ʻike he aha ia Ko Faraday paʻa mau, no ka mea hiki ke kōkua iā ʻoe e ʻike iki aʻe e pili ana i nā ukana.

Ma kēia ʻatikala e hoʻomaopopo ʻoe i kahi ʻoi aku ka maikaʻi he aha ka hauʻoli mau, he aha ka mea e noi ai, a pehea e helu ai ...

He aha ka Faraday mau?

ʻO Michael Faraday

La Ko Faraday paʻa mau he hoʻohana mau ia i nā māla o ka physics a me ke kelekema. Hoʻomaopopo ʻia e like me ka nui o ka uku uila no ka mole o nā uila. No ka ʻepekema Pelekane ʻo Michael Faraday kona inoa. Hiki ke hoʻohana i kēia paʻa mau i nā ʻōnaehana electrochemical e helu i ka nui o nā mea i hana i kahi electrode.

Hiki iā ia ke pani ʻia e ka leka F, a ua ho'ākāka 'ia e like me ka uku molal elemental, hiki e helu like:

haʻilula

ʻOiai F ka waiwai i loaʻa o ko Farday paʻa mau, a me ke kumu uila uila, a ʻo Na ka Avogadro paʻa mau:

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

Wahi a ka SI pololei kēia Faraday pololei, e like me nā mea paʻa ʻē aʻe, a ʻo ke kumu kikoʻī kona waiwai. 96485,3321233100184 C / mol. E like me kāu e ʻike ai, ua hōʻike ʻia i loko o ka anakuhi C / mol, ʻo ia hoʻi, nā coulombs no ka mole. A e hoʻomaopopo he aha kēia mau anakuhi, inā ʻaʻole ʻoe ʻike, hiki iā ʻoe ke hoʻomau i ka heluhelu ʻana i nā ʻāpana ʻelua aʻe ...

He aha ka mole?

mole ʻoma

Un mole he anakahi e ana i ka nui o nā mea. Ma loko o ka SI o nā anakuhi, ʻo ia kekahi o nā nui nui 7. I kekahi mea, he kumumea a i ʻole kahi hui kemika, aia kekahi pūʻulu o nā ʻāpana elemental e haku iā ia. E like ana kahi mole me 6,022 140 76 × 1023 nā hui kumu, ʻo ia ka helu helu paʻa o ko Avogadro paʻa mau.

Hiki i kēia mau mea kūmole ke lilo i atoma, mole mole, ion, electron, photon, a i ʻole kekahi ʻano ʻāpana o nā ʻili kumumea. ʻO kahi laʻana, me kēia hiki iā ʻoe e helu i ka helu o nā ʻĀtoma he aha ka mea i ka gram o kahi waiwai i hāʻawi ʻia.

I ka aniani, pono ka mole, no ka mea, ʻae ia i nā helu he nui e hana ʻia no nā mele, nā hopena kemika, a pēlā aku. ʻO kahi laʻana, no ka wai (H2ʻO), he hopena kāu 2 H2 + ʻ.2 → 2 H2O, ʻo ia hoʻi, ʻelua mau mole o ka hydrogen (H2) a hoʻokahi mole oxygen (ʻO2) pane e hana i ʻelua mole wai o ka wai. Eia kekahi, hiki iā lākou ke hoʻohana i mea e hōʻike ai i ka noʻonoʻo (ʻike i ka molarity).

He aha ka uku uila?

nā uku uila

Ma ka ʻaoʻao ʻē aʻe, mai ka hoʻouku uila Ua kamaʻilio mua mākou i nā manawa ʻē aʻe, he waiwai kino intrinsic ia o kekahi mau ʻāpana subatomic e hōʻike ana i nā ikaika a me ka huhū ma waena o lākou ma muli o nā māla electromagnetic. ʻO ka pilina electromagnetic, ma waena o ka uku a me ka pā uila, ʻo ia kekahi o nā hana nui 4 i ka physics, me ka ikaika ikaika nukelea, ka ikaika nuklea nawaliwali, a me ka umekaumaha.

E ana i kēia uku uila, ka Coulomb (C) a i ʻole Coulomb, a ua wehewehe ʻia e like me ka nui o ka uku i lawe ʻia i hoʻokahi kekona e ka uila uila o ka ikaika hoʻokahi ampere.

Nā noi o ka Faraday mau

Ko Faraday paʻa mau

Inā ʻoe e noʻonoʻo pehea noi hana Hiki iā ʻoe ke loaʻa i kēia Faraday mau, ʻo ka ʻoiaʻiʻo he ʻuʻuku kāu, ʻo kekahi mau hiʻohiʻona:

  • Hoʻoweliweli / anodizing: no nā kaʻina hana i ka ʻoihana metallurgical kahi i uhi ʻia kekahi mea hao me kekahi e ka electrolysis. ʻO kahi laʻana, ke hoʻopaʻa ʻia ka mea kila me ka papa o ka zinc e hāʻawi iā ia i ke kūpaʻa ʻoi aku i ka popopo. I kēia mau kaʻina hana, hoʻohana ʻia ka mea hao e like me ka anode a ʻo ka electrolyte kahi paʻakai hiki ke hoʻoheheʻe ʻia o nā mea anode.
  • Hoʻomaʻemaʻe metala: hiki ke hoʻopili ʻia i nā hana i hoʻohana ʻia no ka refinement o nā metala e like me ke keleawe, zinc, tin, etc. Eia kekahi e nā kaʻina hana electrolysis.
  • Ka hana kemika: e hana i nā mea hoʻohui kemika i hoʻohana mau ʻia kēia maʻamau.
  • ʻImi kemikala: e ka electrolysis hiki ke hoʻoholo ʻia i ka hoʻohui kemika.
  • Hana Gas: nā ʻenekini e like me oxygen a i ʻole hydrogen i loaʻa mai i ka wai e ka electrolysis e hoʻohana pū i kēia paʻa no nā helu.
  • Lapaʻau a me nā aestheticsHiki ke hoʻohana ʻia ka electrolysis e hoʻoulu ai i kekahi mau aʻalolo a i ʻole mālama i kekahi mau pilikia, me ka hemo ʻana o ka lauoho i makemake ʻole ʻia. Me ka ʻole o ka mau, ʻaʻole hiki ke hoʻomohala ʻia ka lehulehu o nā pono hana o kēia ʻano.
  • Nā lawelawe hoʻonohonoho: No nā mea paʻi, hoʻohana ʻia nā hana electrolysis no kekahi mau mea.
  • Mea pihana uila: kahi mea uila i ʻike nui ʻia me kahi kiʻi ʻoniʻoni lahilahi o ka aluminika oxide a me kahi anode aluminika ma waena o nā electrodes. ʻO ka electrolyte kahi hui o boric acid, glycerin, a me ka ammonium hydroxide. A pēlā e hoʻokō ʻia ai kēlā mau mana nui ...

He aha ka uila?

uila uila

A ʻoiai pili mau ka pili o Faraday i ka uila uilaE nānā pehea kēia huaʻōlelo ʻē aʻe e hoʻohana nui ʻia i ka ʻoihana. Mahalo i kēia kaʻina hana, hiki ke hoʻokaʻawale ʻia nā mea o ka hui e ka uila. Hana ʻia kēia e ka hoʻokuʻu ʻana o nā electrons e nā anode anions (ʻokikoki) a me ka hopu ʻana o nā electrons e nā cathode cations (hoʻoliʻiliʻi).

Ua ʻike hewa ʻia ia e William Nicholson, i ka makahiki 1800, ʻoiai e aʻo ana i ka hana o nā paila kemika. I ka 1834, ʻO Michael Faraday hoʻomohala a paʻi i nā kānāwai o ka electrolysis.

ʻO kahi laʻana, ka electrolysis o wai H2O, ʻae e hana i ka oxygen a me ka hydrogen. Inā hoʻopili ʻia kahi kaha pololei ma o nā electrodes, kahi e hoʻokaʻawale ai i ka oxygen mai ka hydrogen, a hiki ke hoʻokaʻawale i nā kinoea ʻelua (ʻaʻole hiki iā lākou ke hoʻopili, no ka mea hana lākou i kahi hopena pahū weliweli loa).


Hoʻopili ka ʻike o ka ʻatikala i kā mākou kumumanaʻo o ka hoʻoponopono hoʻoponopono. E hōʻike i kahi kaomi hemahema ʻaneʻi.

E lilo i mea mua e wehewehe

E waiho i kāu manaʻo

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