2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib qho tshuaj tiv thaiv exothermic yog "tawm tsam uas tag nrho cov qauv enthalpy hloov ΔH⚬ yog qhov tsis zoo." Exothermic cov tshuaj tiv thaiv feem ntau tso cov cua sov thiab ua rau hloov cov ntawv cog lus tsis muaj zog nrog cov muaj zog dua. … Feem ntau ntawm cov tshuaj tiv thaiv zoo heev uas tau pom hauv chav kawm yog exothermic thiab exergonic.
Ib qho piv txwv ntawm cov tshuaj tiv thaiv exothermic yog dab tsi?
txhuam koj cov hniav, ntxuav koj cov plaub hau, thiab teeb koj lub qhov cub yog txhua yam piv txwv ntawm kev tawm tsam sab nraud. Nyeem ntawv kom paub txog kev sib txuas, nruab nrab, kev txhim kho corrosion, thiab dej-raws li exothermic tshua.
Dab tsi yog 5 piv txwv ntawm cov tshuaj tiv thaiv exothermic?
Ntawm no yog qee qhov piv txwv ntawm cov tshuaj tiv thaiv exothermic:
- Kev ua ib lub thawv dej khov. Ua cov dej khov nab kuab yog txheej txheem ntawm cov kua hloov nws lub xeev mus rau cov khoom. …
- daus tsim hauv huab. …
- Kub tswm ciab. …
- Xov tooj cua. …
- Kub qab zib. …
- Tsim cov ion khub. …
- Reaction ntawm Cov kua qaub thiab dej. …
- Dej thiab calcium chloride.
Yuav ua li cas cov tshuaj tiv thaiv tag nrho exothermic?
Summary
- Ib qho tshuaj tiv thaiv exothermic yog tshuaj lom neeg cov tshuaj tiv thaiv uas xav tau lub zog tsawg dua los rhuav cov ntawv cog lus hauv cov reactants dua li tso tawm thaum cov ntawv cog lus tshiab hauv cov khoom.
- Thaum muaj kev tawm tsam sab nraud, lub zog raug muab tawm tas li, feem ntau nyob rau hauv daim ntawv ntawm tshav kub.
- Txhua yam kev kub ntxhovCov tshuaj tiv thaiv yog cov tshuaj tiv thaiv exothermic.
Yuav ua li cas yog cov cim qhia ntawm exothermic tshuaj tiv thaiv?
Cov tshuaj tiv thaiv kab mob sib kis tuaj yeem tshwm sim sai thiab ua rau muaj kev pheej hmoo siab dua lossis entropy (ΔS > 0) ntawm lub kaw lus. Lawv raug qhia los ntawm qhov tsis zoo ntawm cov cua sov (kub poob rau ib puag ncig) thiab txo qis hauv enthalpy (ΔH < 0). Hauv chav kuaj, cov tshuaj tiv thaiv exothermic ua kom sov lossis tuaj yeem tawg.
Pom zoo:
Cov tshuaj tiv thaiv puas muaj kev tiv thaiv?
Cov tshuaj tiv thaiv COVID-19 txhawb koj lub cev tiv thaiv kab mob li cas? Cov tshuaj tiv thaiv ua haujlwm los ntawm kev txhawb koj lub cev tiv thaiv kab mob los tsim cov tshuaj tiv thaiv, raws nraim li nws xav tau yog tias koj yog raug tus kab mob.
Cov tshuaj tiv thaiv dab tsi rau kev txhaj tshuaj tiv thaiv thib ob?
Cov tshuaj tiv thaiv COVID-19 thib ob yog dab tsi? Cov kev mob tshwm sim feem ntau tom qab koob thib ob yog qhov mob ntawm qhov chaw txhaj tshuaj (92.1% tshaj tawm tias nws kav ntev dua 2 teev); qaug zog (66.4%); mob lub cev lossis leeg nqaij (64.
Puas yog lub cev tiv thaiv kab mob hauv lub cev puas tsim cov tshuaj tiv thaiv?
Lub cev tiv thaiv kab mob tau txais, nrog kev pab los ntawm lub cev hauv lub cev, tsim cov hlwb (tshuaj tiv thaiv kab mob) los tiv thaiv koj lub cev los ntawm ib tus neeg invader tshwj xeeb. Cov tshuaj tiv thaiv no yog tsim los ntawm cov hlwb hu ua B lymphocytes tom qab lub cev tau raug rau cov neeg ua phem.
Vim li cas cov tshuaj tiv thaiv combustion yog cov tshuaj tiv thaiv oxidation?
Kev sib xyaw ua ke ib txwm ua rau muaj oxygen lossis huab cua. … Hauv combustion cov tshuaj tiv thaiv oxygen yog ua ke nrog cov roj qhov chaw feem ntau carbon thiab hydrogen raws li ua rau carbon dioxide thiab dej thiab yog li qhov no yog cov tshuaj tiv thaiv oxidation.
Puas yog cov tshuaj tiv thaiv exothermic ib txwm muaj tshwm sim?
Yog tias qhov tshuaj tiv thaiv yog exothermic (H yog qhov tsis zoo) thiab qhov entropy S yog qhov zoo (ntau qhov teeb meem), qhov hloov pauv lub zog dawb yog ib txwm tsis zoo thiab cov tshuaj tiv thaiv ib txwm muaj. … Yog hais tias qhov enthalpy hloov H thiab qhov hloov pauv entropy S yog qhov zoo lossis ob qho tib si tsis zoo, qhov tshwm sim ntawm qhov tshwm sim nyob ntawm qhov kub.
