Qhov sib txawv tseem ceeb ntawm homolysis thiab heterolysis yog homolysis yog kev tawg ntawm cov tshuaj sib xyaw ua ke rau hauv ob qhov sib npaug sib npaug, qhov heterolysis yog kev tawg ntawm cov tshuaj sib xyaw ua ke rau hauv ob qhov sib txawv..
Peb tuaj yeem siv cov nyiaj sib koom ua ke ntawm cov tshuaj sib txuas los piav txog cov txheej txheem homolysis thiab heterolysis. Bond dissociation zog yog ib qho kev ntsuas ntawm lub zog ntawm daim ntawv cog lus tshuaj. Ib daim ntawv cog lus tuaj yeem sib cais ua homolytic lossis heterolytic yam. Bond dissociation zog yog txhais raws li tus txheej txheem enthalpy hloov thaum ib tug tshuaj daim ntawv cog lus yog cleaved ntawm homolysis.
Homolysis yog dab tsi?
Homolysis yog qhov sib cais ntawm cov tshuaj lom neeg hauv txoj hauv kev uas nws muab ob qho tshuaj sib npaug ntawm cov tshuaj sib xyaw. Ib daim ntawv cog lus tshuaj (covalent bond) muaj ob lub electrons. Nyob rau hauv daim ntawv no ntawm fission, txhua qhov ntawm cov fragments tau txais ib tug unpaired electron. Thaum no daim ntawv cog lus dissociation tshwm sim nyob rau hauv ib tug nruab nrab molecule uas muaj ib tug txawm tus xov tooj ntawm electrons, nws ua ob sib npaug zos dawb radicals.
Daim duab 01: General Homolytic Fission Mechanism
Homolytic bond dissociation zog yog tus nqi ntawm lub zog xav tau los cuam tshuam cov tshuaj lom neeg ntawm hemolysis. Hemolysis ntawm daim ntawv cog lus tshuaj yog qhov sib xyaw ua ke ntawm daim ntawv cog lus-tsim ob lub radicals, tsis yog ob ions. Ntawm no, daim ntawv cog lus electrons ntawm lub atoms muab faib ua ob halves thiab raug coj los ntawm ob lub atoms. Piv txwv li, homolytic cleavage ntawm ib tug sigma daim ntawv cog lus ua ob radicals uas muaj ib tug unpaired electron ib radical.
Heterolysis yog dab tsi?
Heterolysis yog qhov sib cais ntawm cov tshuaj lom neeg hauv txoj hauv kev uas nws muab ob qho tshuaj sib txawv ntawm cov tshuaj sib xyaw. Heterolytic fission yog dissociation ntawm ib daim ntawv cog lus tshuaj thiab tsim ob qhov tsis sib xws. Ib daim ntawv cog lus tshuaj (covalent bond) muaj ob lub electrons. Nyob rau hauv daim ntawv no ntawm fission, ib tug fragment tau txais ob daim ntawv cog lus electron khub thaum lub lwm fragment tsis tau txais ib qho ntawm cov nyiaj electrons.
Daim duab 02: Ob Hom Heterolytic Fissions
Heterolytic bond dissociation zog yog tus nqi ntawm lub zog xav tau los clave ib qho tshuaj tiv thaiv ntawm heterolysis. Heterolysis yog cleavage ntawm cov tshuaj tiv thaiv nyob rau hauv ib qho asymmetrically. Heterolysis tsim cations thiab anions txij thaum, nyob rau hauv heterolysis, daim ntawv cog lus electron khub yog coj los ntawm lub electronegative atom (nws yog hloov dua siab tshiab rau hauv lub anion), thaum lwm atom yuav tsis siv electrons (nws ua cov cation).
Qhov txawv ntawm Homolysis thiab Heterolysis yog dab tsi?
Homolysis thiab heterolysis yog cov txheej txheem tshuaj lom neeg uas cuam tshuam rau ib leeg. Qhov sib txawv tseem ceeb ntawm homolysis thiab heterolysis yog homolysis yog kev tawg ntawm cov tshuaj sib xyaw ua ke rau hauv ob qhov sib npaug ntawm cov tshuaj, hos heterolysis yog kev tawg ntawm cov tshuaj sib xyaw rau hauv ob qhov sib txawv. Ntxiv mus, homolytic bond dissociation zog txiav txim siab lub zog xav tau rau homolysis tshwm sim whereas heterolytic bond dissociation zog txiav txim lub zog xav tau rau heterolysis tshwm sim.
Cov lus qhia hauv qab no qhia txog qhov sib txawv ntawm homolysis thiab heterolysis hauv daim ntawv teev npe.
Summary – Homolysis vs Heterolysis
Homolysis thiab heterolysis yog cov txheej txheem tshuaj lom neeg uas cuam tshuam rau ib leeg. Qhov sib txawv tseem ceeb ntawm homolysis thiab heterolysis yog tias homolysis yog kev tawg ntawm cov tshuaj sib xyaw ua ke rau hauv ob qho tshuaj sib npaug, qhov heterolysis yog kev tawg ntawm cov tshuaj sib xyaw ua ke rau hauv ob qhov sib txawv.
