Qhov Tseem Ceeb Qhov txawv - Thermal Decomposition vs Thermal Dissociation
Kub yog ib hom ntawm lub zog uas tuaj yeem hloov ntawm ob yam khoom. Thaum tshav kub kub siv tau los ua ionize ib yam khoom los yog decompose ib yam khoom. Cov ntsiab lus thermal decomposition thiab thermal dissociation feem ntau siv sib hloov. Txawm hais tias cov ntsiab lus no qhia tib lub tswv yim ntawm kev sib cais ntawm cov khoom sib txawv, lawv txawv ntawm ib leeg. Qhov sib txawv tseem ceeb ntawm thermal decomposition thiab thermal dissociation yog tias thermal decomposition yog kev tawg ntawm cov khoom loj rau hauv cov khoom me me uas siv cov cua sov thaum thermal dissociation yog ionization ntawm cov khoom siv hluav taws xob.
Dab tsi yog Thermal Decomposition?
Thermal decomposition yog ib hom tshuaj decomposition los ntawm tshav kub. Nws tseem hu ua thermolysis. Qhov kub ntawm qhov decomposition pib yog hu ua decomposition kub. Nws yog txheej txheem ntau kauj ruam.
Decomposition cuam tshuam nrog kev tawg ntawm cov tshuaj lom neeg. Txhawm rau rhuav tshem cov tshuaj lom neeg, lub zog yuav tsum tau muab los ntawm sab nraud. Yog li ntawd, thermal decomposition feem ntau yog cov tshuaj tiv thaiv endothermic. Qhov piv txwv tshaj plaws rau cov khoom uas raug thermal decomposition yog kev hloov pauv hlau carbonates.
Piv txwv ntawm Thermal Decomposition
Calcium carbonate (CaCO3) decomposes rau hauv calcium oxide (CaO) thiab carbon dioxide (CO2) thaum tshav kub.
CaCO3(s)→CaO(s) + CO2(g)
Daim duab 01: Calcium Carbonate Rocks
Thermal decomposition ntawm mercuric oxide muab mercury hlau thiab oxygen
2HgO → 2Hg + O2
Thermal decomposition ntawm hlau oxide tsim hlau oxide thiab carbon dioxide
FeCO3→FeO + CO2
Dab tsi yog Thermal Dissociation?
Thermal dissociation yog ionization ntawm cov khoom siv cua sov. Cov tshuaj yog muab cais ua cationic thiab anionic counterparts. Nws yog cov txheej txheem ib kauj ruam uas suav nrog kev sib cais ntawm cov khoom ua ob ntu. Cov tshuaj tiv thaiv no feem ntau yog cov txheej txheem thim rov qab thiab ib daim ntawv cog lus tshuaj tau tawg.
Daim duab 02: Kev sib cais ntawm Methyl Bromide
Cov khoom qub tuaj yeem tau txais los ntawm kev ua kom txias cov tshuaj tiv thaiv vim tias cov txheej txheem thim rov qab.
Example
CH3Br → CH3++ Br-
CH3-CH3 →CH3+ + CH3
Dab tsi yog qhov zoo sib xws ntawm Thermal Decomposition thiab Thermal Dissociation?
Ob Thermal Decomposition thiab Thermal Dissociation yog cov txheej txheem uas suav nrog kev sib cais ntawm cov khoom rau hauv cov khoom me me uas siv lub zog hluav taws xob
Qhov txawv ntawm Thermal Decomposition thiab Thermal Dissociation yog dab tsi?
Thermal Decomposition vs Thermal Dissociation |
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| Thermal decomposition yog ib hom tshuaj decomposition los ntawm tshav kub. | Thermal dissociation yog ionization ntawm cov khoom siv cua sov. |
| Thermal decomposition yog txheej txheem ntau kauj ruam. | Thermal dissociation is a single-step process. |
| Thermal decomposition suav nrog kev tawg ntawm cov khoom ua ob lossis ntau qhov sib tw. | Thermal dissociation suav nrog kev sib cais ntawm cov khoom rau hauv ions. |
Summary – Thermal Decomposition vs Thermal Dissociation
Thermal decomposition thiab dissociation yog ob nqe lus uas feem ntau siv sib pauv. Tab sis muaj qhov sib txawv ntawm cov ntsiab lus no. Qhov sib txawv ntawm thermal decomposition thiab thermal dissociation yog tias thermal decomposition yog kev tawg ntawm cov khoom loj rau hauv cov khoom me me uas siv cov cua sov thaum thermal dissociation yog ionization ntawm cov khoom siv hluav taws xob.
