Ho Utloisisa Likarabelo tsa Ts'ebetso le ho Bola
K'hemistri, karabelo ke phetoho e kenyeletsang dintho tse qalang (di-reactant) ho ba dintho tse ntjha (dihlahiswa). Diphetoho tsena di ka etsahala ka tlhaho kapa ka mekgwa e reretsweng laboratoring kapa indastering. Har'a mefuta e mengata ya dikarabelo tsa dikhemikhale, dikarabelo tsa tlhahiso le ho bola ke tse ding tsa dintho tsa motheo le tse tshohlwang kgafetsa. Di ka nkuwa e le "tse fapaneng" le tse ding: tlhahiso e bopa metsoako ho tswa dinthong tse bonolo, ha ho bola ho arola metsoako ho ba dintho tse bonolo. Ho utlwisisa dikarabelo tsena tse pedi ho bohlokwa hobane ho rala motheo wa dihlooho tse pharaletseng tse kang stoichiometry, matla a karabelo, esita le mekgwa ya indasteri.
Ho Utloisisa Likarabelo tsa Ts'ebetso
Karabelo ea tlhahiso (hangata e bitsoang karabelo ea motsoako) ke karabelo ea lik'hemik'hale eo ho eona lintho tse peli kapa ho feta li kopanang ho etsa sehlahisoa se le seng se seholo. Ka kakaretso, karabelo ena e ka ngoloa e le equation e bonolo:
A + B → AB
Sena se bolela hore dielemente kapa metswako e mmedi e arabela ho theha motswako o motjha. Dikarabelo tsa popontshwa hangata di fumanwa ho thehweng ha metswako e sa pheleng le ya manyolo. Bophelong ba letsatsi le letsatsi, boholo ba thepa eo re e sebedisang ke ditlamorao tsa dikarabelo tsa popontshwa, tse etsahalang ka tlhaho le ka boenjiniere ba diindasteri.
Litšobotsi tsa Likarabelo tsa Ts'ebetso
Likarabo tsa synthesis li na le litšobotsi tse 'maloa tse bonoang habonolo, ho kenyeletsoa:
1. Palo ea sehlahisoa e ka tlase ho palo ea reactant, hobane reactant e kopana.
2. Ho thehoa metsoako e mecha eo hangata e leng e rarahaneng ho feta dikarolo tsa pele.
3. Hangata ho kenyelletsa ho lokolloa kapa ho monngoa ha matla, ho latela mofuta oa tlamo e thehiloeng le maemo a karabelo.
Mehlala ea Likarabelo tsa Ts'ebetso
Mehlala e meng ea liketso tse tloaelehileng tsa synthesis ke ena:
1. Sebopeho sa metsi
– 2H₂(g) + O₂(g) → 2H₂O(l)
Haedrojene le oksijene di a kopana ho etsa metsi. Ena ke mohlala o tsebahalang haholo wa ho kopanya dintho.
2. Sebopeho sa sodium chloride (letsoai la tafole)
– 2Na(s) + Cl₂(g) → 2NaCl(s)
Sodium e arabela le khase ea chlorine ho hlahisa letsoai.
3. Sebopeho sa khabone e daekosede
– C(li-) + O₂(g) → CO₂(g)
Khabone e arabela le oksijene ho hlahisa khabone diokside. Le hoja sena se boetse se amahanngoa le ho cha, se arotsoe e le karabelo ea tlhahiso hobane se etsa sehlahisoa se le seng se seholo ho tsoa ho li-reactants tse peli.
Likarabelo tsa Ts'ebetso Indastering
Likarabelo tsa tlhahiso li bohlokoa haholo indastering. Mohlala o mong ke mokhoa oa Haber oa ho hlahisa ammonia:
– N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
Ammonia ke thepa e tala ea mantlha bakeng sa manyolo a naetrojene, a bapalang karolo ea bohlokoa tlhahisong ea temo ea sejoale-joale. Ntle le liketso tsena tsa maiketsetso, ho fumaneha ha manyolo le lik'hemik'hale tse ling tse 'maloa tsa bohlokoa ho ne ho tla fokotseha haholo.
Ho Utloisisa Likarabelo tsa ho Bola
Ho fapana le tlhahiso, karabelo ea ho bola ke karabelo eo motsoako o le mong o arohanang ho ba lintho tse peli kapa ho feta tse bonolo. Ka kakaretso, equation ea karabelo ke:
AB → A + B
Likarabelo tsena li hloka ho robeha ha litlamo tsa lik'hemik'hale metsoakong. Hobane ho robeha ha litlamo hangata ho hloka matla, likarabelo tse ngata tsa ho bola li etsahala ka thuso ea mocheso (mocheso), motlakase (electrolysis), kapa leseli (photolysis).
Litšobotsi tsa Likarabelo tsa ho Bola
Tse ling tsa litšobotsi tsa liketso tsa ho bola li kenyelletsa:
1. Sesebediswa se le seng sa ho arabela se hlahisa dihlahiswa tse mmalwa.
2. Motsoako o aroloa ka mefuta e bonolo.
3. Hangata ho hlokahala matla a kantle ho qala karabelo.
Mefuta ea Likarabelo tsa ho Bola
Likarabelo tsa ho bola li ka aroloa ho latela mohloli oa matla o bakang ho bola:
1. Ho bola ha mocheso (mocheso)
Karabelo e hlaha ka lebaka la ho futhumatsa. Mohlala:
– CaCO₃(s) → CaO(li) + CO₂(g)
Calcium carbonate (lejoe la mokoetla) e futhumatsoa ho hlahisa calcium oxide (quicklime) le carbon dioxide.
2. Ho bola ha motlakase (motlakase)
Karabelo e etsahala ka motlakase. Mohlala:
– 2H₂O(l) → 2H₂(g) + O₂(g)
Metsi a aroloa hore e be haeterojene le oksijene ka electrolysis.
3. Ho bola ha fotokhemik'hale (leseli)
Karabelo e etsahala ka lebaka la matla a leseli. Mohlala:
– 2AgCl(s) → 2Ag(s) + Cl₂(g)
Kloride ea silevera e a bola ha e pepesetsoa khanyeng, e hlahisa khase ea silevera le chlorine. Ts'ebetso ena ke motheo oa mohopolo oa ho nka lifoto tsa filimi tsa khale.
Likarabelo tsa ho Bola Bophelong ba Letsatsi le Letsatsi
Likarabelo tsa ho bola ha metsoako ha li etsahale feela laboratoring. Mohlala:
– Ho bola ha hydrogen peroxide
– 2H₂O₂(aq) → 2H₂O(l) + O₂(g)
Peroxide ea haedrojene e ka bola ho ba metsi le oksijene, hangata e potlakisoa ke sesebelisoa se kang MnO₂.
– Ho bola ha lintho tse phelang
Ts'ebetso ea ho bolisa litšila tsa lijo le litšila tsa lintho tse phelang e kenyelletsa letoto la liketso tsa ho bola (tse thusoang ke likokoana-hloko), tse hlahisang lintho tse bonolo joalo ka khase ea methane, carbon dioxide le metsi.
Phapang pakeng tsa Likarabelo tsa Ts'ebetso le ho Bola
Ho hlakisa taba ena, papiso ea tse peli ke ena:
1. Tsela ea karabelo
– Ho kopanya: ho bonolo → ho rarahane haholoanyane
– Ho qhaqha: ho rarahane → ho bonolo
2. Palo ea li-reactants le lihlahisoa
– Ho kopanya: di-reactant tse mmalwa → sehlahisoa se le seng se seholo
– Ho bola: reactant e le 'ngoe → lihlahisoa tse 'maloa
3. Litlhoko tsa matla
– Ho kopanya: e ka ba exothermic kapa endothermic (ho itshetlehile ka ntho le tlamo)
– Ho bola: hangata e le endothermic (e hloka matla), leha tlas'a maemo a itseng e ka thusoa ke catalyst.
4. Mehlala ea mekhoa ea karabelo
– Ho kopanya: A + B → AB
– Ho senyeha ha sebopeho: AB → A + B
Qetello
Likarabelo tsa tlhahiso le ho bola ke mefuta e 'meli ea motheo ea lik'hemik'hale tse fapaneng le mekhoa ea tsona ea phetoho ea lik'hemik'hale. Karabelo ea tlhahiso ke mokhoa oa ho kopanya lintho tse peli kapa ho feta ho etsa motsoako o mocha, ha karabelo ea ho bola ke mokhoa oa ho arola motsoako o le mong hore e be lintho tse peli kapa ho feta tse bonolo. Ka bobeli li phetha karolo ea bohlokoa bophelong ba letsatsi le letsatsi, saenseng le indastering—ho tloha ho thehoeng ha metsi le tlhahisong ea manyolo, ho isa ho senyeheng ha lejoe la mokoetla, ho qhibilihisoa ha metsi ka motlakase, le ho bola ha metsoako e itseng ke khanya.
Ka ho utloisisa mehopolo, litšobotsi le mehlala ea likarabelo tsa tlhahiso le ho bola, re tla ithuta habonolo lihlooho tse tsoetseng pele tse kang li-reaction equation, stoichiometry, matla a karabelo, le ts'ebeliso ea k'hemistri masimong a fapaneng. Haeba ho hlokahala, puisano ena e ka atolosoa ka mathata a ho itloaetsa, ho fumana mefuta ea karabelo ho tsoa ho li-chemical equation, kapa ho buisana ka matla a tlamahano le karolo ea li-catalyst.
