Usoro Electrolysis Ngwọta NaCl
Electrolysis bụ usoro kemịkalụ nke a na-etinye ọkụ eletrik iji kpalite mmeghachi omume na-abụghị nke mberede. Otu n'ime ihe atụ kachasị nke electrolysis bụ electrolysis nke ngwọta sodium chloride (NaCl). A na-ejikarị electrolysis nke ngwọta NaCl eme ihe n'ụlọ ọrụ mmepụta ihe iji mepụta gas chlorine (Cl2) na sodium hydroxide (NaOH), ha abụọ dị mkpa n'ọtụtụ ọrụ ụlọ ọrụ mmepụta ihe.
Ụkpụrụ Ndị Dị Mkpa nke Electrolysis
Tupu ị banye n'ime nkọwa gbasara electrolysis nke ngwọta NaCl, ọ dị mkpa ịghọta ụkpụrụ ndị bụ isi nke usoro electrolysis:
1. Elektrọn na Ion:
– Electrolysis gụnyere mbufe nke elektrọn nke na-akpata mgbanwe kemịkalụ na ihe a gbazere na mmiri ahụ.
– Mmiri electrolyte, n'ọnọdụ a, NaCl, na-agbaze ka ọ bụrụ ion mgbe agbazere na mmiri (H2O). ion ndị a bụ Na+ (sodium) na Cl- (chloride).
2. Electrodes:
– Usoro electrolysis na-eji elektrọd abụọ: anode (positive) na cathode (negative). Ọkụ eletrik na-agafe elektrọd ndị a.
– Iọn dị na ngwọta ahụ na-aga n'ihu elektrọd nwere chaja dị iche. Iọn ndị na-adịghị mma na-aga n'ihu anode, ebe ion ndị dị mma na-aga n'ihu kathode.
3. Isi Iyi Ike:
– A na-eji isi iyi eletriki mpụga enye ike dị mkpa iji kpalite mmeghachi omume a na-abụghị nke mberede. Mgbe etinyere voltaji, ọkụ eletrik na-agafe na ngwọta ahụ.
Usoro Electrolysis NaCl
Mgbe e tinyere sodium chloride solution n'ime eletrọniki, ọtụtụ mmeghachi omume kemịkalụ na-eme na anode na cathode. Mmeghachi omume ndị a na-emepụtakarị gas chlorine, hydrogen gas (H2), na sodium hydroxide.
Usoro nke 1: Ionization nke NaCl
Mgbe NaCl gbazere n'ime mmiri, ọ na-ekewa n'ime ion ya:
\[ NaCl (aq) \rightarrow Na^+ (aq) + Cl^- (aq) \]
A na-agbanwekwa mmiri n'onwe ya ntakịrị ka ọ bụrụ ion hydrogen (H+) na hydroxide (OH-):
\[ H_2O (l) \ aka ekpe H^+ (aq) + OH^- (aq) \]
Nkebi nke 2: Mmeghachi omume na Electrodes
Usoro electrolysis gụnyere mmeghachi omume na electrodes abụọ ahụ.
Mmeghachi omume na Kathode (Mbelata):
Na katod ahụ, a na-ebelata ion H+ iji mepụta gas hydrogen:
\[ 2H^+ (aq) + 2e^- \ aka nri H_2 (g) \]
A naghị ebelata ion Na+ n'ihi na mmeghachi omume mbelata H+ nwere obere ike.
Mmeghachi omume na Anode (Oxidation):
Na anode ahụ, Cl-ions na-enweta oxidation iji mepụta gas chlorine:
\[ 2Cl^- (aq) \ aka nri Cl_2 (g) + 2e^- \]
OH-ion anaghị enweta oxidation n'ihi na Cl-ion nwere obere ike oxidation.
Nkebi nke 3: Nhazi nke NaOH
Ion ndị fọdụrụ n'ime mmiri ahụ, ya bụ Na+ na OH-, ga-emeghachi omume na nhazi sodium hydroxide (NaOH):
\[ Na^+ (aq) + OH^- (aq) \rightarrow NaOH (aq) \]
Ya mere, ihe ikpeazụ nke usoro electrolysis bụ hydrogen gas na kathode, chlorine gas na anode, na sodium hydroxide solution na electrolyte medium.
Ngwa na Uru
Usoro electrolysis NaCl nwere ọtụtụ ojiji na uru dị iche iche n'ọtụtụ ngalaba ụlọ ọrụ mmepụta ihe na nyocha, gụnyere:
1. Mmepụta Chlorine:
– Chlorine bụ ihe dị oke mkpa n'ime ụlọ ọrụ kemịkalụ. A na-eji Chlorine eme ihe n'imepụta PVC (polyvinyl chloride), na ọgwụ mgbochi mmiri ọṅụṅụ, yana n'ọtụtụ ihe ndị ọzọ dị iche iche.
2. Mmepụta Sodium Hydroxide:
– Sodium hydroxide (a makwaara dị ka caustic soda) dị mkpa n'ọtụtụ ụlọ ọrụ dị iche iche, gụnyere mmepụta ncha na ncha, ákwà, na ihe e ji alumina sie.
3. Mmepụta Haịdrojiin:
– Enwere ike iji gas hydrogen emepụta dị ka mmanụ ọkụ, n'ịchacha ígwè, na n'ọtụtụ usoro ọrụ mmepụta ihe ndị ọzọ.
Electrolysis na mkpụrụ ndụ Diaphragm nke Membrane
N'ọrụ mmepụta ihe, e nwere ọtụtụ teknụzụ maka electrolysis NaCl, abụọ n'ime ha bụ mkpụrụ ndụ membrane na mkpụrụ ndụ diaphragm:
1. Akpụkpọ ahụ:
– N'ime sel membrane, a na-ekewa anode na cathode site na akpụkpọ ion-selective nke na-ekwe ka naanị ion ụfọdụ gafere.
– Nke a na-eme ka ngwaahịa ndị e mepụtara na anode na kathode ghara ịdị n'otu.
2. Mkpụrụ ndụ diaphragm:
– Mkpụrụ ndụ diaphragm na-eji akpụkpọ ahụ nwere oghere nke na-eme ka electrolyte na-agagharị mana ọ na-egbochi ngwakọta ngwaahịa.
– Usoro a na-adịkarị ọnụ ala karịa mkpụrụ ndụ akpụkpọ ahụ mana ọ chọrọ njikwa siri ike iji hụ na nkewa ngwaahịa dị irè.
Ihe Ndị Na-emetụta Ịrụ Ọrụ
Ụfọdụ ihe ndị na-emetụta arụmọrụ nke usoro electrolysis gụnyere:
- Ntinye uche nke Electrolyte:
– Nnukwu ntinye nke NaCl nwere ike ime ka arụmọrụ dịkwuo mma, mana ọ nwekwara ike ime ka nchara anode dịkwuo mma.
– Ụdị elektrọd:
– Ojiji nke ihe elektrọd kwesịrị ekwesị nwere ike imetụta nsonaazụ electrolysis. A na-ejikarị titanium graphite ma ọ bụ oxide kpuchie ya n'ihi na ha anaghị emebi emebi.
– Okpomọkụ na Nrụgide:
- Ọnọdụ ọrụ dịka okpomọkụ na nrụgide nwere ike imetụta ọnụego mmeghachi omume na arụmọrụ zuru oke nke usoro ahụ.
Mmetụta gburugburu ebe obibi
Ọ bụ ezie na electrolysis NaCl nwere ọtụtụ uru, usoro a nwekwara ụfọdụ mmetụta gburugburu ebe obibi nke kwesịrị ịtụle:
1. Mmetọ Chlorine:
– Gas chlorine na-emeghachi omume nke ukwuu ma na-egbu egbu ma e nwee oke njupụta. Ya mere, ijikwa na iwepụ chlorine chọrọ nlekọta siri ike.
2. Mmepụta ihe mkpofu:
– Mmepụta sodium hydroxide chọkwara njikwa ihe mkpofu dị mma, ebe ọ bụ na ọ na-emebi emebi.
3. Oriri Ike:
– Electrolysis bụ usoro na-ewe ike nke ukwuu. Iji isi mmalite ike mmeghari ohuru nwere ike inye aka belata mmetụta gburugburu ebe obibi nke oriri ike a.
Mmechi
Elektrolysis nke mmiri NaCl bụ teknụzụ dị mkpa na ụlọ ọrụ kemịkalụ, na-emepụta gas chlorine, hydrogen gas, na sodium hydroxide. Nghọta zuru oke nke mmeghachi omume na-eme na electrodes, ụdị mkpụrụ ndụ ejiri mee ihe, na ihe ndị na-emetụta arụmọrụ dị mkpa iji mee ka mmepụta dịkwuo elu ma belata mmetụta gburugburu ebe obibi. N'agbanyeghị ụfọdụ ihe ịma aka, site na njikwa kwesịrị ekwesị, NaCl electrolysis ka bụ otu n'ime usoro kemịkalụ kachasị mkpa ma ejiri mee ihe n'ọtụtụ ebe na ụlọ ọrụ taa.
