Tambayoyi da Tattaunawa Kan Rarraba Hydrocarbon Misali
Hydrocarbons mahaɗan halitta ne da suka ƙunshi sinadaran carbon (C) da hydrogen (H). Ana iya bambanta waɗannan mahaɗan bisa ga tsarinsu da nau'ikan haɗin da suke ɗauke da su. Gabaɗaya, ana rarraba hydrocarbons zuwa manyan rukuni biyu: aliphatic hydrocarbons da aromatic hydrocarbons. Wannan labarin zai tattauna misalai da yawa na matsaloli da tattaunawarsu da ta shafi rarrabuwar hydrocarbon.
1. Haɗakar Haɗakar Aliphatic
Hydrocarbons na Aliphatic hydrocarbons ne waɗanda ba su ƙunshi zoben benzene ko wasu zoben ƙamshi ba. Ana iya ƙara raba hydrocarbons na Aliphatic zuwa nau'i uku:
a. Alkan
Alkanes suna ɗauke da sinadarin hydrocarbons masu cikakken ƙarfi waɗanda ke ɗauke da haɗin kai ɗaya tsakanin ƙwayoyin carbon. Tsarin gabaɗaya na alkanes shine CnH2n+2.
Misali Tambaya ta 1:
Rubuta dabarar sinadarai da sunan alkane mai atom 5 na carbon.
Tattaunawa:
Ga alkane mai atom 5 na carbon (n=5), tsarin sinadaran shine C5H12. Ta amfani da ƙa'idodin suna na IUPAC, ana kiran wannan mahaɗin Pentane.
b. Alken
Alkenes hydrocarbons ne marasa cikawa waɗanda ke ɗauke da haɗin kai biyu ko fiye (C=C) tsakanin ƙwayoyin carbon. Tsarin su na gabaɗaya shine CnH2n.
Misali Tambaya ta 2:
Rubuta dabarar sinadarai da sunan wani alkene mai atom 3 na carbon.
Tattaunawa:
Ga alkene mai atom 3 na carbon (n=3), tsarin sinadaran shine C3H6. An san wannan mahaɗin da propene.
c. Alkynes
Alkynes hydrocarbons ne marasa cikawa waɗanda ke ɗauke da haɗin gwiwa sau uku ko fiye (C≡C) tsakanin ƙwayoyin carbon. Tsarin su na gabaɗaya shine CnH2n-2.
Misali Tambaya ta 3:
Rubuta dabarar sinadarai da sunan wani alkyne mai ƙwayoyin carbon guda 4.
Tattaunawa:
Ga wani alkyne mai atom 4 na carbon (n=4), tsarin sinadaran shine C4H6. Wannan mahaɗin ana kiransa Butyne.
2. Hydrocarbons masu ƙamshi
Hydrocarbons masu ƙamshi hydrocarbons ne waɗanda ke ɗauke da zoben benzene ɗaya ko fiye a cikin tsarinsu. Benzene wani sinadari ne mai matuƙar muhimmanci a cikin sinadarai na halitta kuma yana da dabarar sinadarai ta C6H6.
Misali Tambaya ta 4:
Bayyana dalilin da yasa aka haɗa benzene a cikin rukunin hydrocarbon mai ƙanshi kuma ku ba da wasu misalai.
Tattaunawa:
An rarraba Benzene a matsayin hydrocarbon mai ƙanshi saboda yana da tsarin zobe mafi sauƙi kuma mafi karko, tare da haɗin π da aka rarraba daidai gwargwado a kusa da zoben carbon. Wannan yana ba benzene kwanciyar hankali mafi girma fiye da hydrocarbons na aliphatic. Misalan hydrocarbons masu ƙanshi banda benzene sun haɗa da toluene (methylbenzene), xylene (dimethylbenzene), da naphthalene (zoben benzene guda biyu da aka haɗa tare).
3. Isomers da Stereoisomers
Isomers sune mahaɗan da ke da tsari iri ɗaya na kwayoyin halitta amma kuma suna da tsari daban-daban. Stereoisomers nau'in isomer ne wanda atoms ɗin da ke cikin kwayar halitta an shirya su a tsari ɗaya amma sun bambanta a yanayin girma uku.
a. Isomers na Tsarin
Isomers na tsari sune isomers waɗanda suka bambanta a yadda aka tsara atom ɗinsu a cikin sarƙoƙin carbon ko zobba.
Misali Tambaya ta 5:
Bada isomers guda biyu na tsarin C4H10.
Tattaunawa:
Guda biyu na tsarin isomers na C4H10 sune:
1. n-Butane (sarkar madaidaiciya): CH3-CH2-CH2-CH3
2. Isobutane (sarkar reshe): (CH3)2CH-CH3
b. Sitiriyomomi masu siffar geometric
Tsarin isomerism na geometric (cis-trans isomerism) yana faruwa a cikin alkenes ko mahadi masu haɗin gwiwa biyu waɗanda ba sa juyawa cikin 'yanci.
Misali Tambaya ta 6:
Ba da misali na stereoisomer na geometric don 2-butene.
Tattaunawa:
Ga 2-butene (C4H8), akwai stereoisomers guda biyu:
1. cis-2-butene, inda atom biyu na hydrogen suke a gefe ɗaya na haɗin biyu.
2. trans-2-butene, inda atom ɗin hydrogen guda biyu suke a ɓangarorin biyu na haɗin kai.
4. Cyclo-Hydrocarbons
Cyclo-hydrocarbons hydrocarbons ne da ke samar da tsarin zobe ba tare da wani ƙarin haɗin gwiwa biyu ba sai waɗanda ake buƙata don samar da zoben.
a. Cycloalkane
Cycloalkanes su ne hydrocarbons masu cikakken cyclic waɗanda ke da tsarin CnH2n na gabaɗaya.
Misali Tambaya ta 7:
Rubuta dabarar sinadarai da sunan cycloalkane tare da ƙwayoyin carbon guda 6.
Tattaunawa:
Ga cycloalkane mai atom 6 na carbon (n=6), tsarin sinadaran shine C6H12. Wannan mahaɗin ana kiransa cyclohexane.
b. Cycloalkenes
Cycloalkenes sune hydrocarbons marasa cikakken cikawa waɗanda ke ɗauke da haɗin gwiwa biyu a cikin zobe.
Misali Tambaya ta 8:
Rubuta dabarar sinadarai da sunan cycloalkene mai atom 5 na carbon.
Tattaunawa:
Ga cycloalkene mai atom 5 na carbon (n=5), tsarin sinadaran shine C5H8. Wannan mahaɗin ana kiransa cyclopentene.
Kammalawa
Fahimtar rarrabuwar hydrocarbon da nau'ikan isomers daban-daban muhimmin abu ne ga sinadaran halitta. Ana iya haɗa hydrocarbons zuwa aliphatic hydrocarbons (alkanes, alkenes, alkynes) da aromatic hydrocarbons. Bugu da ƙari, manufar isomerism, duka tsarin da stereoisomerism, yana da mahimmanci don fahimtar mahaɗan halitta daban-daban. Ta hanyar yin aiki ta hanyar misalan da tattaunawa da aka bayar, ana fatan fahimtar wannan kayan zai bayyana.
Da fahimtar rarrabuwa da halayen kowane nau'in hydrocarbon, za mu iya fahimtar aikace-aikace da halayen sinadarai da suka shafi waɗannan mahaɗan a rayuwar yau da kullun da kuma a masana'antar sinadarai.
