Cov txheej txheem:

Dab tsi yog qhov hloov pauv ntawm cov tshuaj exothermic?
Dab tsi yog qhov hloov pauv ntawm cov tshuaj exothermic?

Video: Dab tsi yog qhov hloov pauv ntawm cov tshuaj exothermic?

Video: Dab tsi yog qhov hloov pauv ntawm cov tshuaj exothermic?
Video: Tshuaj zoo qhov muag pom kev 2024, Kaum ib hlis
Anonim

Ib exothermic tshuaj tiv thaiv yog a tshuaj tiv thaiv uas tso tawm lub zog los ntawm lub teeb lossis cua sov. Nws yog qhov opposite ntawm endothermic tshuaj tiv thaiv . Qhia hauv a tshuaj equation: reactants → khoom + zog.

Hauv qhov no, qee qhov piv txwv ntawm kev hloov pauv exothermic yog dab tsi?

Qee qhov piv txwv ntawm cov txheej txheem exothermic yog:

  • Combustion ntawm fuels xws li ntoo, thee thiab roj av.
  • Cov tshuaj tiv thaiv thermal.
  • Cov tshuaj tiv thaiv alkali hlau thiab lwm yam hlau electropositive heev nrog dej.
  • Condensation ntawm nag los ntawm dej vapor.
  • Sib tov dej thiab muaj zog acids lossis muaj zog hauv paus.
  • Sib tov acids thiab bases.

Ib sab saum toj no, qhov kev hloov pauv endothermic yog dab tsi? endothermic . Lub ntsiab txhais ntawm endothermic yog tshuaj lom neeg cov tshuaj tiv thaiv uas yog nrog los ntawm kev nqus cua sov, los yog ib yam kab mob uas tsim kom muaj cua sov los tswj nws qhov kub thiab txias. Ib qho tshuaj tiv thaiv uas ua haujlwm tsuas yog thaum tshav kub absorbed yog ib qho piv txwv ntawm cov tshuaj tiv thaiv uas yuav piav raws li endothermic.

Kuj Paub, qee qhov piv txwv ntawm exothermic thiab endothermic cov tshuaj tiv thaiv yog dab tsi?

Piv txwv ntawm Endothermic thiab Exothermic txheej txheem

  • Dissolving ammonium chloride hauv dej.
  • Cracking alkanes.
  • Nucleosynthesis ntawm cov ntsiab lus hnyav dua nickel hauv cov hnub qub.
  • Evaporating kua dej.
  • Cov dej khov yaj.

Cov khoom siv dab tsi siv cov tshuaj tiv thaiv exothermic?

Kev siv txhua hnub exothermic tshuaj tiv thaiv suav nrog cov kaus poom ua kom sov tus kheej thiab cov tes ua kom sov. Thaum lub zog raug coj los ntawm ib puag ncig, qhov no yog hu ua endothermic tshuaj tiv thaiv thiab qhov kub ntawm qhov chaw ib puag ncig txo qis.

Pom zoo: