Cov txheej txheem twg yog exothermic?

2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36

Hauv thermodynamics, lub sij hawm txheej txheem exothermic (exo-: "sab nraum") piav txog a txheej txheem los yog cov tshuaj tiv thaiv uas tso tawm lub zog ntawm lub cev mus rau nws ib puag ncig, feem ntau yog nyob rau hauv daim ntawv ntawm tshav kub, tab sis kuj nyob rau hauv ib daim ntawv ntawm lub teeb (xws li lub txim taws, nplaim taws, los yog flash), hluav taws xob (xws li roj teeb), los yog suab (xws li tawg tau hnov. thaum kub

Kuj nug, cov txheej txheem twg yog endothermic?

Ib txheej txheem endothermic yog ib qho txheej txheem uas yuav tsum tau los yog absorbs lub zog ntawm nws ib puag ncig, feem ntau nyob rau hauv daim ntawv ntawm tshav kub. Tej zaum nws yuav yog tshuaj txheej txheem , xws li dissolving ammonium nitrate hauv dej, los yog lub cev txheej txheem , xws li melting ntawm ice cubes.

Tsis tas li ntawd, uas yog ib qho piv txwv ntawm cov txheej txheem exothermic? Lwm qhov yooj yim piv txwv ntawm cov tshuaj tiv thaiv exothermic yog combustion, xws li teeb taws tswm ciab. Ib qho kev tawm tswv yim pib ntawm lub zog ua rau cov pa oxygen thiab wax react los tsim carbon dioxide, dej, thiab cua sov.

Kuj paub yog, txheej txheem twg yog ib txwm exothermic?

Exothermic Cov tshuaj tiv thaiv: Kub tawm. 2) Los nag: Condensation ntawm dej vapor rau hauv nag tso lub zog nyob rau hauv daim ntawv ntawm tshav kub yog ib qho piv txwv ntawm ib tug txheej txheem exothermic.

Cov txheej txheem twg tsis yog exothermic?

1 Teb. Txhua yam spontaneous txheej txheem yog tsis exothermic , vim nws yog Gibbs Dawb lub zog uas txiav txim siab spontaneity, tsis yog cov enthalpy. Qhov no yog heev txheej txheem exothermic . Tab sis nws kuj muaj qhov tsis zoo ntawm qhov kev hloov pauv hauv entropy, vim tias cov kua ua kom zoo dua li cov roj.