Mokhoa oa ho Khutlisa Karabelo ea Lik'hemik'hale
Karabelo ea lik'hemik'hale ke ts'ebetso eo ho eona ntho e le 'ngoe kapa tse ngata li fetoloang ntho e 'ngoe ka phetoho ea sebopeho sa lik'hemik'hale. Maemong a mangata, ho utloisisa mokhoa oa ho fetola karabelo ea lik'hemik'hale ho ka ba molemo haholo. Mohlala, indastering, likarabelo tsa ho fetola li ka sebelisoa ho ntlafatsa tlhahiso, ho fokotsa litšenyehelo, kapa ho laola litšila. Sengoloa sena se tla hlahloba mekhoa e fapaneng ea ho fetola likarabelo tsa lik'hemik'hale, melao-motheo ea motheo ea thermodynamic, le ts'ebeliso e sebetsang ea mohopolo ona bophelong ba letsatsi le letsatsi le indastering.
Melao-motheo ea Motheo
1. Molao oa Tekano ea Lik'hemik'hale
Likarabelo tsa lik'hemik'hale li ka hlaha ka mahlakoreng a mabeli: ho ea pele (li-reactant li fetoha lihlahisoa) le ho khutlela morao (lihlahisoa li fetoha li-reactant hape). Molao oa tekano ea lik'hemik'hale o bolela hore tlas'a maemo a tekano, sekhahla sa karabelo ea pele se lekana le sekhahla sa karabelo e khutlelang morao. Tekanyo ena e ka hlalosoa ke kamehla ea tekano (\(K_{eq}\)), e fanoang ke equation:
\[ K_{eq} = \frac{[Lihlahisoa]}{[Li-reactant]} \]
Mohlala o bonolo ke karabelo ea ho thehoa ha ammonia:
\[ N_2(g) + 3H_2(g) \ ka ho le letshehadi 2NH_3(g)\]
Nako e sa fetoheng ea tekano e ka ngoloa ka tsela ena:
\[ K_{eq} = \frac{[NH_3]^2}{[N_2][H_2]^3} \]
2. Molao-motheo oa Le Chatelier
Molao-motheo oa Le Chatelier o re haeba sistimi e leka-lekaneng e kopana le phetoho (joalo ka phetoho ea mahloriso, khatello, kapa mocheso), sistimi e tla ikamahanya le maemo ho fokotsa litlamorao tsa phetoho le ho fihlela teka-tekano e ncha. Molao-motheo ona o thusa haholo ho khutlisetsa morao liketso tsa lik'hemik'hale.
Contoh:
Haeba haeterojene e ngata (\(H_2\)) e eketsoa karabelong e ka hodimo, ho fokotsa 'kgatello' ena e eketsehileng, karabelo e tla sekamela ho ya ka ho le letona (ka pele) ho sebedisa \(H_2\) e eketsehileng, e le hore ho thehwe ammonia e ngata (\(NH_3\)).
Ka lehlakoreng le leng, haeba re tlosa sehlahiswa se seng (\(NH_3\)), sistimi e tla kgutlela morao ho le letona ho nkela sebaka sa \(NH_3\) se lahlehileng sebaka, ka hona e kganna karabelo pele.
Litsela tsa ho Khutlisa Likarabelo tsa Lik'hemik'hale
1. Ho Fetola Boima ba Lintho
E 'ngoe ea litsela tse bonolo ka ho fetisisa tsa ho fetola karabelo ea lik'hemik'hale ke ho fetola mahloriso a li-reactant kapa lihlahisoa. Ka ho eketsa mahloriso a li-reactant kapa ho fokotsa mahloriso a lihlahisoa, karabelo e atisa ho tsoela pele. Ka lehlakoreng le leng, ka ho fokotsa mahloriso a li-reactant kapa ho eketsa mahloriso a lihlahisoa, karabelo e ka qobelloa ho tsamaea ka lehlakoreng le fapaneng.
Contoh:
Bakeng sa karabelo ea ho thehoa ha metsi:
\[ 2H_2(g) + O_2(g) \ ka ho le letshehadi 2H_2O(g)\]
Haeba mahloriso a metsi (\(H_2O\)) a eketseha, karabelo e ka kgannwa ka lehlakoreng le fapaneng ho hlahisa \(H_2\) le \(O_2\) tse ngata.
2. Ho Fetola Kgatelelo le Molumo
Tsela e 'ngoe ea ho fetola karabelo ke ho fetola khatello kapa bophahamo ba sistimi. Sena se bohlokoa haholo bakeng sa liketso tse amanang le likhase, kaha khatello ea khase e na le tšusumetso e kholo ho tekano.
Contoh:
Karabelong ea ammonia e boletsoeng ka holimo:
\[ N_2(g) + 3H_2(g) \ ka ho le letshehadi 2NH_3(g)\]
Karabelo ena e kenyelletsa phokotso ya palo yohle ya dimolekhule tsa kgase. Ka ho eketsa kgatello kapa ho fokotsa bophahamo ba modumo, karabelo e atisa ho ya ka ho le letona (pele) ho hlahisa dimolekhule tse fokolang tsa kgase, ka hona e fokotsa kgatello.
Ho fetola karabelo, mohlala, ho qhala ammonia hore e be naetrojene le haeterojene, re ka fokotsa khatello kapa ra eketsa molumo, e le hore karabelo e sekamele ho le letshehadi (ka morao).
3. Ho Fetola Thempereichara
Likarabelo tsa lik'hemik'hale li ka boela tsa aroloa e le endothermic (mocheso o monyang) kapa exothermic (mocheso o lokollang). Ho fetola mocheso ho ka ama tekano ea karabelo 'me ho ka sebelisoa ho fetola karabelo.
Contoh:
Karabelo ea ho theha ammonia ho tsoa ho naetrojene le haeterojene ke exothermic (e ntša mocheso):
\[ N_2(g) + 3H_2(g) \motsu o nepahetseng 2NH_3(g) + \mongolo{heat}\]
Haeba mocheso o eketseha, tekano e tla fetohela ka letsohong le letšehali (ka morao) hobane sistimi e leka ho fokotsa mocheso o eketsehileng ka ho ja matla (ho qhaqha ammonia hore e be naetrojene le haeterojene).
Ka lehlakoreng le leng, ho kganna karabelo pele (ho etsa hore ho be le \(NH_3\) e ngata), mocheso o hloka ho fokotswa.
4. Tšebeliso ea Li-Catalyst
Sekhahla ke ntho e eketsang sekhahla sa karabelo ea lik'hemik'hale ntle le ho jeoa ke karabelo ka boeona. Le hoja likhahla li sa fetole boemo ba tekano, li ka thusa ho fihlela tekano kapele. Maemong a mang, tšebeliso ea likhahla tse fapaneng e ka ama tataiso ea karabelo.
Contoh:
Indastering, mefuta e fapaneng ea li-catalyst e atisa ho sebelisoa ho potlakisa liketso tse itseng. Mohlala, ts'ebetsong ea Haber-Bosch, catalyst ea tšepe e sebelisoa ho eketsa sekhahla sa ho thehoa ha ammonia ho tsoa ho naetrojene le haeterojene.
5. Electrolysis
Electrolysis ke mokhoa o kenyeletsang ho sebedisa motlakase ho qobella karabelo e fapaneng ya dikhemikhale, haholoholo karabelo ya redox. Electrolysis hangata e sebediswa ho fetola dikarabelo tsa dikhemikhale diindastering tsa electroplating le tsa ho hlwekisa tshepe.
Contoh:
Ka electrolysis ea metsi:
\[ 2H_2O(l) \ motsu 2H_2(g) + O_2(g) \]
Ka ho sebelisa motlakase, re ka arola limolek'hule tsa metsi hore e be likhase tsa haeterojene le oksijene, ra fetola karabelo ea ho kopanya haeterojene le oksijene tse qalileng ho hlahisa metsi.
Litšebeliso tse Sebetsang
1. Indasteri ea Lik'hemik'hale
Indastering ea lik'hemik'hale, ho fetola liketso tsa lik'hemik'hale ho bohlokoa lits'ebetsong tsa tlhahiso. Mohlala, tlhahisong ea ammonia ka ts'ebetso ea Haber-Bosch, karolo e 'ngoe ea ammonia e bolisoa hape ho hlahisa likhase tsa naetrojene le haeterojene, tse ka sebelisoang hape, ho eketsa bokhoni le ho fokotsa litšenyehelo tsa tlhahiso.
2. Phekolo ea Metsi
Kalafong ea metsi, electrolysis e sebelisoa ho hlahisa khase ea chlorine ho tsoa letsoai (NaCl). Ebe chlorine e sebelisoa ho bolaea likokoana-hloko metsing. Karabelo e fapaneng e ka sebelisoa ho laola lihlahisoa tse ling le ho fokotsa lintho tse chefo.
3. Lekala la Bophelo bo Botle
Likarabelo tse fapaneng le tsona li sebelisoa meriana. Mohlala, ha ho kenngoa oksijene 'meleng ka phekolo ea oksijene e feteletseng (HBOT), ho hlaha karabelo e laoloang ea ho senyeha ho thusa ho folisa lisele tse lemetseng.
Qetello
Ho fetola dikarabelo tsa dikhemikhale ke mohopolo wa bohlokwa o nang le dikopo tse ngata tse sebetsang bophelong ba letsatsi le letsatsi le indastering. Ka ho utlwisisa le ho sebedisa melaomotheo ya motheo jwalo ka melao ya tekatekano ya dikhemikhale le molaomotheo wa Le Chatelier, hammoho le mekgwa ya ho fetola mahloriso, kgatello le mocheso, re sebedisa di-catalyst le electrolysis, re ka laola dikarabelo tsa dikhemikhale ha ho hlokahala. Bokgoni bona ha bo na thuso feela bakeng sa ho eketsa bokgoni ba tlhahiso empa hape le bakeng sa ho ntlafatsa ditsamaiso tse fapaneng tse amang bophelo bo botle, tikoloho le theknoloji.
