Muenzaniso wemibvunzo inokurukura nezvemahydrocarbon
Pendauluan
Mahydrocarboni makemikari anoumbwa nekabhoni (C) nehydrogen (H) chete. Ndiwo makemikari makuru epetroleum negasi rechisikigo uye anoita basa rakakosha mumabasa akasiyana-siyana emaindasitiri uye mashandisirwo ezuva nezuva. Mahydrocarboni akakamurwa kuita mapoka maviri makuru: aliphatic nearomatic. MaAliphatic compounds akakamurwazve kuita maalkanes, alkenes, uye alkynes zvichienderana nerudzi rwechisungo chiri pakati pemacarboni ari mumamorekuru awo. Muchinyorwa chino, tichakurukura mienzaniso yematambudziko ane chekuita nemahydrocarboni uye maitiro ekugadzirisa.
Mubvunzo 1: Kuzivikanwa uye Kutumidzwa kweMahydrocarbon
Mubvunzo:
Ziva uye ipa zita reIUPAC remakemikari anotevera ehydrocarbon:
1. CH₄
2. C₂H₆
3. C₂H₄
4. C₃H₈
5. C₄H₁₀
6. C₂H₂
Jawaban:
1. CH₄: Methane. Iyi ndiyo alkane iri nyore ine atomu imwe chete yekabhoni uye maatomu mana ehydrogen.
2. C₂H₆ : Ethane. Iyi i alkane ine maatomu maviri ekabhoni nemaatomu matanhatu ehydrogen.
3. C₂H₄: Ethene (kana ethylene). Iyi i alkene ine maatomu maviri ekabhoni nemaatomu mana ehydrogen, ane chisungo chimwe chete chakapetwa kaviri.
4. C₃H₈: Propane. Iyi i alkane ine maatomu matatu ekabhoni uye maatomu masere ehydrogen.
5. C₄H₁₀ : Butane. Iyi i alkane ine maatomu mana ekabhoni uye maatomu gumi ehydrogen.
6. C₂H₂: Ethyne (kana acetylene). Iyi ialkyne ine maatomu maviri ekabhoni nemaatomu maviri ehydrogen, ine chisungo chimwe chete chetriple bond.
Mubvunzo 2: MaIsomer eButane
Mubvunzo:
Sarudza uye tsanangura ma structure isomers e butane (C₄H₁₀).
Jawaban:
Butane ine ma isomers maviri echimiro:
1. n-Butane: CH₃-CH₂-CH₂-CH₃ (cheni yakatwasuka).
2. Isobutane (2-methylpropane):
``
CH₃
|
CH₃-C-CH₃
|
H
``
Isomer yekutanga, n-butane, ine cheni yekabhoni yakatwasuka, nepo isomer yechipiri, isobutane, ine matavi ane atomu imwe chete yekabhoni yakabatana nemamwe maatomu matatu ekabhoni.
Mubvunzo 3: Kupisa kwePropane
Mubvunzo:
Nyora maitiro akakwana ekupiswa kwepropane (C₃H₈).
Jawaban:
Kupisa kwakakwana kwemahydrocarbon kunoburitsa kabhoni dhayokisaidhi (CO₂) nemvura (H₂O). Maitiro emakemikari ndeaya:
\[ C₃H₈ + 5O₂ \museve wekurudyi 3CO₂ + 4H₂O \]
Mukuita uku kwekutsva, molekyuru imwe yepropane inopindirana nemamorekyuru mashanu eokisijeni kuti igadzire mamorekyuru matatu ecarbon dioxide nemamorekyuru mana emvura.
Mubvunzo 4: MaOrbitals Akasanganiswa muEthene
Mubvunzo:
Tsanangura mhando dzema "hybridization orbital" anowanikwa mumaatomu ekabhoni mu compound ethene (C₂H₄).
Jawaban:
Mu ethene, atomu yega yega yekabhoni inosanganiswa ne sp². Kusanganiswa uku kunobatanidza imwe s orbital ne p orbitals mbiri kuti dzigadzire matatu sp² hybrid orbitals. Imwe neimwe sp² hybrid orbital inoumba sigma bond ne hydrogen atomu kana imwe carbon atomu, nepo p orbitals dzisina kushandiswa dzichibatana laterally kuti dzigadzire pi bonds. Kugoverwa uku kunoguma nechimiro chine double bond imwe chete pakati pemacarbons.
Mubvunzo 5: Kuzivikanwa kweMahydrocarbon Anonhuhwirira
Mubvunzo:
Benzene ihydrocarbon inonhuhwirira here? Tsanangura hunhu hwemahydrocarbon anonhuhwirira.
Jawaban:
Ehe, benzene (C₆H₆) muenzaniso wakajairika we hydrocarbon inonhuhwirira. Hunhu hwe hydrocarbon inonhuhwirira hunosanganisira:
1. Chimiro cheRingi: Benzene ine chimiro cherin'i ine hexagonal ine maatomu matanhatu ekabhoni.
2. Kubatana: Maerekitironi eπ ari mumorekuru yebenzene anobviswa panzvimbo pamusoro perin'i yese, zvichigadzira system yakazara yeπ.
3. Kugadzikana kweResonance: Benzene inoratidza kugadzikana kwakanyanya nekuda kwe resonance, uko mabhondi maviri neasina kurongeka anochinjana asi zvinobudirira maerekitironi anogoverwa zvakaenzana murin'i yese.
4. kusanganiswa kwe sp²: Atomu yega yega yekabhoni iri mu ring yebenzene inosanganiswa ne sp².
5. Makona eBond: Makona ese eCCC bond mubenzene ari 120°, zvinoenderana netrigonal planar geometry inogadzirwa ne sp² hybridization.
Mubvunzo 6: Kuwedzera Maitiro eAlkenes
Mubvunzo:
Tsanangura maitiro ekuita kwekuwedzera kwebromine (Br₂) ku ethene (C₂H₄).
Jawaban:
Maitiro ekuita kwekuwedzera kwebromine kune ethene ndeaya anotevera:
1. Kutanga: Molekyuru yebromine (Br₂) inoswedera pedyo nedouble bond ye ethene. Maerekitironi eπ edouble bond anodzinga electron pair iri mubromine bond, saka bromine inopolarized.
2. Kuumbwa kweZvinhu Zviri Pakati: Maerekitironi eπ anobva mu alkene bond anorwisa rimwe remaatomu e bromine, zvichiita kuti pave nekabhoni yenguva pfupi uye zvinogadzira bromonium ion complex iri pakati.
3. Mhinduro: Bromide (Br⁻) inoumbwa panguva yekutanga inorwisa kabhoni yebromonium complex kubva kune rimwe divi (nzvimbo inonzwisisika), zvekuti chisungo chepi chebond mbiri chinoderedzwa kuita chisungo chesigma chebond imwe chete.
Chigadzirwa chekupedzisira i1,2-dibromoethane (C₂H₄Br₂):
\[ C₂H₄ + Br₂ \rightarrow C₂H₄Br₂ \]
Mhedziso
Kukurukurirana kwemahydrocarbon kunosanganisira zvinhu zvakasiyana-siyana, kusanganisira kuzivikanwa uye kutumidzwa mazita emakomponi, isomerism, makemikari, uye chimiro chemamorekuru. Kunzwisisa kwakasimba kwepfungwa idzi kwakakosha pakudzidza kemikari yeorganic uye mashandisirwo ayo muindasitiri uye muhupenyu hwezuva nezuva. Nekuramba tichidzidzira uye tichigadzirisa matambudziko, tinogona kunzwisisa zviri nani maitiro nehunhu hwemahydrocarbon. Tinovimba kuti matambudziko aya emuenzaniso nehurukuro zvakabatsira kujekesa pfungwa huru dzemahydrocarbon.
