Yuav ua li cas yog endothermic thiab exothermic cov tshuaj tiv thaiv nyob rau hauv daim duab lub zog?
Yuav ua li cas yog endothermic thiab exothermic cov tshuaj tiv thaiv nyob rau hauv daim duab lub zog?

Video: Yuav ua li cas yog endothermic thiab exothermic cov tshuaj tiv thaiv nyob rau hauv daim duab lub zog?

Video: Yuav ua li cas yog endothermic thiab exothermic cov tshuaj tiv thaiv nyob rau hauv daim duab lub zog?
Video: Yuav ua li cas thiaj ua tau neeg zoo 2024, Kaum ib hlis
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Hauv qhov xwm txheej endothermic tshuaj tiv thaiv , cov reactants yog qis dua zog qib piv rau cov khoom-raws li qhia hauv daim duab zog hauv qab no. Hauv qhov xwm txheej exothermic tshuaj tiv thaiv , cov reactants yog siab dua zog qib piv rau cov khoom, xws li qhia hauv qab no daim duab zog.

Tsis tas li ntawd, daim duab qhia lub zog qhia tau hais tias qhov kev tshwm sim no yog exothermic li cas?

Vertical axis ntawm no daim duab sawv cev rau qib zog thiab kab rov tav axis sawv cev rau kev nce qib ntawm cov tshuaj tiv thaiv los ntawm reactants rau cov khoom. Daim duab qhia lub zog rau exothermic tshuaj tiv thaiv Hauv ib exothermic tshuaj tiv thaiv , reactants muaj ntau dua zog tshaj cov khoom.

Ib tug kuj yuav nug, ua li cas koj sau cov tshuaj tiv thaiv exothermic? Qhia nyob rau hauv ib tug tshuaj sib npaug: reactants → khoom + zog. Exothermic Reaction txhais tau tias "exo" (los ntawm lo lus Greek: "έξω", txhais ua "tawm") lub ntsiab lus tso tawm thiab "thermic" txhais tau tias cua sov. Yog li cov tshuaj tiv thaiv nyob rau hauv uas muaj kev tso tawm ntawm tshav kub nrog los yog tsis muaj teeb yog hu ua exothermic tshuaj tiv thaiv.

Yog li ntawd, endothermic thiab exothermic cov tshuaj tiv thaiv zoo li cas?

Qhov txawv ntawm endothermic thiab exothermic cov tshuaj tiv thaiv dag nyob rau hauv cov lus lawv tus kheej. "Thermic" yog hais txog cua sov, ib yam li hauv lo lus "thermometer." "Exo" txhais tau tias "sab nraum" thiab "endo" txhais tau tias "sab hauv." Yog li ntawd, ib endothermic tshuaj tiv thaiv rub cov cua sov rau hauv ib qho khoom lossis thaj chaw, thaum ib qho exothermic tshuaj tiv thaiv tshem tawm cua sov.

Puas yog Boiling Dej endothermic lossis exothermic?

Peb txhua tus tuaj yeem txaus siab rau qhov ntawd dej tsis spontaneously boil ntawm chav tsev kub; xwb peb yuav tsum tau cua sov nws. Vim peb yuav tsum ntxiv cua sov, boiling dej yog ib txoj kev uas chemists hu endothermic . Kom meej meej, yog tias qee cov txheej txheem xav tau cua sov, lwm tus yuav tsum muab cov cua sov thaum lawv ua. Cov no yog hu ua exothermic.

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