Vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?
Vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?

Video: Vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?

Video: Vim li cas thiaj muaj kev hloov pauv hauv tshuaj lom neeg?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Kaum ib hlis
Anonim

Lub zog hloov hauv a tshuaj tiv thaiv yog vim qhov sib txawv ntawm cov nyiaj khaws cia tshuaj lub zog ntawm cov khoom thiab cov reactants. Qhov no khaws cia tshuaj zog, or kub cov ntsiab lus, ntawm qhov system yog hu ua nws enthalpy.

Tsuas yog li ntawd, dab tsi yog qhov hloov pauv ntawm cov tshuaj tiv thaiv?

Cov Kub ntawm Cov tshuaj tiv thaiv (tseem paub thiab Enthalpy ntawm Cov tshuaj tiv thaiv ) yog hloov hauv enthalpy ntawm a tshuaj tiv thaiv uas tshwm sim ntawm lub siab tsis tu ncua. Nws yog ib chav ntsuas thermodynamic ntawm kev ntsuas muaj txiaj ntsig zoo rau kev suav cov nqi zog ntawm ib lub mole yog tso tawm lossis tsim tawm hauv tshuaj tiv thaiv.

Ib yam li ntawd, dab tsi tshwm sim thaum tshav kub kub muaj cov tshuaj tiv thaiv? Nce qhov kub tsub kom cov tshuaj tiv thaiv ntau ntxiv vim yog qhov tsis txaus ntseeg loj ntawm kev sib tsoo ntawm lub zog loj. Nws tsuas yog cov kev sib tsoo no xwb (muaj tsawg kawg yog lub zog ua kom muaj zog rau cov tshuaj tiv thaiv) uas ua rau muaj kev cuam tshuam.

Ib sab ntawm qhov no, vim li cas cov cua sov feem ntau ntxiv rau cov tshuaj tiv thaiv tshuaj?

Lo lus nug: Yog vim li cas cua sov feem ntau ntxiv rau cov tshuaj tiv thaiv Ua nyob rau hauv Laboratory? Yog li ntawd Cov kev sib tsoo ntawm Reacting Molecules muaj zog ntau dua kom lawv tuaj yeem kov yeej Activation Energy Barriers. Yog Lub Cov tshuaj tiv thaiv Yog Endothermic, Kub Ua kom txo qis kev hloov pauv hauv Entropy.

Vim li cas qhov kub ntawm cov tshuaj tiv thaiv tseem ceeb?

Enthalpy yog tseem ceeb vim nws qhia peb ntau npaum li cas kub (lub zog) yog nyob rau hauv ib qho system. Kub yog tseem ceeb vim peb tuaj yeem rho tawm haujlwm tseem ceeb ntawm nws. Nyob rau hauv cov nqe lus ntawm ib tug tshuaj tshuaj tiv thaiv , ib qho kev hloov pauv enthalpy qhia peb ntau npaum li cas enthalpy ploj lossis tau txais, enthalpy txhais tau tias kub lub zog ntawm qhov system.

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