Cov txheej txheem:
Video: Dab tsi ua rau cov txheej txheem dissolving exothermic lossis endothermic?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov txheej txheem ntawm yaj tuaj yeem yog endothermic (kub poob) los yog exothermic (kub nce mus). Yog tias nws siv lub zog ntau dua los cais cov khoom ntawm cov kuab tshuaj dua li tso tawm thaum cov dej molecules sib txuas rau cov khoom, ces qhov kub thiab txias ( endothermic ).
Ua li no, yog vim li cas dissolving gas exothermic?
Thaum a gas yaj Nws ua li ntawd vim nws cov molecules cuam tshuam nrog cov kuab tshuaj molecules. Vim tias cov cua sov tso tawm thaum cov kev sib cuam tshuam zoo nkauj tshiab no, yaj feem ntau cov pa hauv kua yog ib exothermic txheej txheem (ΔHsoln<0).
Ib yam li ntawd, yog dissolving nacl nyob rau hauv dej endothermic los yog exothermic? Teb thiab piav qhia: Dissolving ntsev hauv dej yog endothermic . Qhov no txhais tau tias thaum twg ntsev yog yaj nyob rau hauv dej qhov kub ntawm cov tshuaj feem ntau yog qis dua me ntsis
Ua li no, 3 kauj ruam hauv kev ua kom tiav yog dab tsi?
Lub zog ntawm Dissolution
- Kauj Ruam 1: Sib cais cov ntsiab lus ntawm cov kua los ntawm ib leeg [ENDOTHERMIC]
- Kauj Ruam 2: Sib cais cov khoom hnyav ntawm ib leeg [ENDOTHERMIC]
- Kauj Ruam 3: Muab cov kuab tshuaj sib cais thiab cov kuab tshuaj los ua cov tshuaj [EXOTHERMIC]
Puas yog calcium chloride thiab dej endothermic lossis exothermic?
Calcium chloride yog ib tug chemical compound ua los ntawm calcium ions thiab chlorine ions. Cov ions yog tuav ua ke los ntawm ib qho ionic, los yog tsis muaj zog ntsev daim ntawv cog lus. Kev sib tov calcium chloride nrog dej yog ib exothermic cov tshuaj tiv thaiv, uas txhais tau hais tias kev sib xyaw ntawm ob yam khoom tso tawm cua sov.
Pom zoo:
Dab tsi yog cov txheej txheem tsim nyog rau kev ntxuav cov cuvettes?
Ua ntej siv, cuvettes yuav tsum tau ntxuav kom tshem tawm cov seem seem. Yog tias cov cuvettes zoo li huv si, tsuas yog yaug ob peb zaug nrog dej distilled, tom qab ntawd ib zaug nrog acetone (kom tsis txhob muaj dej) thiab tawm mus rau huab cua qhuav nyob rau hauv txoj hauj lwm inverted (xws li ntawm cov ntaub so ntswg) ua ntej siv
Cov xim dab tsi yog cov hlwb feem ntau ua ntej siv thawj cov xim rau cov txheej txheem Gram stain?
Ua ntej, siv lead ua violet, thawj stain, yog siv rau lub tshav kub-tso smear, muab tag nrho cov hlwb xim liab
Dab tsi yog txheej txheem spontaneous thiab non-spontaneous txheej txheem?
Cov txheej txheem spontaneous yog ib qho uas tshwm sim yam tsis muaj kev cuam tshuam ntawm sab nraud. Ib txoj kev uas tsis yog tshwm sim yuav tsis tshwm sim yog tias tsis muaj kev cuam tshuam ntawm sab nraud
Dab tsi yog lub zog tso tawm cov txheej txheem uas rhuav tshem cov molecules loj rau hauv cov me?
Catabolic Reactions. Cov tshuaj tiv thaiv Catabolic rhuav tshem cov organic molecules loj rau hauv cov molecules me, tso tawm lub zog uas muaj nyob rau hauv cov tshuaj bonds
Cov txheej txheem twg yog txheej txheem endothermic?
Cov txheej txheem endothermic yog ib qho txheej txheem uas xav tau lossis nqus lub zog los ntawm nws qhov chaw nyob ib puag ncig, feem ntau yog ua kom sov. Nws yuav yog cov txheej txheem tshuaj, xws li dissolving ammonium nitrate hauv dej, lossis cov txheej txheem ntawm lub cev, xws li melting ntawm cov dej khov nab kuab