Video: Yuav ua li cas koj xam cov hauj lwm ua los ntawm ib tug zoo tagnrho gas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov ua haujlwm los ntawm gas nyob rau hauv ib qho infinitesimal kauj ruam yog sib npaug rau lub siab multiplied los ntawm kev hloov nyob rau hauv ntim. Cov kev sib npaug Ua haujlwm = PΔV W o r k = P Δ V yog qhov tseeb tsuas yog rau qhov siab tas li; rau cov xwm txheej dav dav, peb yuav tsum ntiav cov haujlwm ib txwm ua = ∫PdV W o r k = ∫ P d V nrog thaj tsam tsim nyog.
Tom qab ntawd, ib tug kuj yuav nug, ua li cas koj nrhiav tau cov hauj lwm ua los ntawm ib tug zoo tagnrho gas?
Isobaric txheej txheem Txij li thaum lub siab yog tas li, lub zog exerted yog tas li thiab lub ua haujlwm yog muab raws li W = Fd, qhov twg F (= PA) yog lub zog ntawm lub piston siv los ntawm lub siab thiab d yog qhov kev hloov ntawm lub piston. Yog li ntawd, lub ua haujlwm los ntawm gas (W) yog: W = PAd.
Tom qab, lo lus nug yog, dab tsi yog chav tsev rau kev ua haujlwm? Chav tsev . The SI chav tsev ntawm ua haujlwm yog joule (J), uas txhais tau tias yog ua haujlwm expended los ntawm ib tug quab yuam ntawm ib tug Newton los ntawm ib tug hloov ntawm ib 'meter'.
Ntawm no, ua haujlwm li cas hauv thermodynamics?
Hauv thermodynamics , ua haujlwm ua los ntawm ib qho system yog lub zog xa los ntawm qhov system mus rau nws ib puag ncig. Kinetic zog, lub zog muaj peev xwm thiab lub zog sab hauv yog cov qauv ntawm lub zog uas yog cov khoom ntawm lub cev. Ib qho system muaj tsis muaj ua haujlwm , ua haujlwm yog ib txoj kev ua tiav los ntawm los yog ntawm ib qho system.
PV nRT yog dab tsi?
PV = nRT : Txoj Cai Roj Zoo Zoo. Kaum tsib Piv txwv Txhua chav tshwm sim peb zaug thiab lub voos xwmfab hauv paus yields L-atm / mol-K, qhov tseeb units rau R thaum siv rau hauv cov ntsiab lus ntawm cov pa roj. Yog li ntawd, peb muaj: PV /nT = R. los yog, feem ntau: PV = nRT . R yog hu ua gas tsis tu ncua.
Pom zoo:
Yuav ua li cas koj daws qhov zoo tagnrho gas txoj cai?
Txoj Cai Kev Cai Roj Hmab Zoo Tshaj Plaws Cov Lus Nug Gas Txoj Cai Cov Lus Nug: Teb: Qhov Volume yog V = 890.0mL thiab qhov kub yog T = 21 ° C thiab qhov siab yog P = 750mmHg. PV = nRT. Teb: Tus naj npawb ntawm moles yog n = 3.00moles, kub yog T = 24 ° C thiab siab yog P = 762.4 mmHg. PV = nRT
Yuav ua li cas koj ua hauj lwm tawm lub resultant quab yuam siv ib tug parallelogram ntawm rog?
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