Isibonelo sokusebenzisa umthetho wokuqala we-thermodynamics enqubweni ye-isochoric (ivolumu eqhubekayo)

3 Izibonelo zemibuzo mayelana nokusetshenziswa komthetho wokuqala we-thermodynamics ezinqubweni ze-isochoric (ivolumu eqhubekayo)

1. Igrafu yokucindezela (P) ngokumelene nomthamo (V) wegesi edlula enkambisweni ye-isochoric. Umsebenzi owenziwa yigesi enkambisweni ye-AB…

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Inqubo AB = inqubo ye-isochoric (ivolumu engaguquki). Uma ivolumu ye-isochoric iphezulu, ivolumu yegesi (kanye nevolumu yesikhala) ayishintshi ngakho akukho msebenzi owenziwa yigesi.

2. Ama-mole amathathu egesi ye-monatomic ekushiseni okungu-47^oC kanye nokucindezela 2 x 10⁵ UPascal udlula enkambisweni ye-isochoric kuze kube yilapho ingcindezi ikhuphuka ibe ngu-3 x 10⁵ Pascal. Ushintsho lwamandla angaphakathi egesi lu… I-Universal gas constant (R) = 8,315 J/mol.K
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I-Diketahui :
Izinga lokushisa lokuqala (T)₁= = 47^oC + 273 = 320 K
Ingcindezi yokuqala (P)₁) = 2 x 10⁵ Pa
Ingcindezi yokugcina (P)₂) = 3 x 10⁵ Pa
I-Universal gas constant (R) = 8,315 J/mol.K
Inani lama-moles (n) = 3
Kubuziwe : Izinguquko emandleni kugesi
Jawab :
Enqubweni ye-isochoric, ivolumu ihlala ingaguquki ngakho akukho msebenzi owenziwa yigesi (W = 0).
Umthetho Wokuqala We-Thermodynamics :
Ngokusekelwe ekususelweni kwale fomula, kuphethwa ngokuthi enqubweni ye-isochoric, ukushisa okwengezwa ohlelweni (Q) kubangela ukuthi amandla angaphakathi esistimu (U) ande. Ngokuphambene nalokho, ukushisa okukhishwa uhlelo kubangela ukuthi amandla angaphakathi esistimu anciphe. Kungakanani ushintsho emandleni angaphakathi egesi? Ushintsho emandleni angaphakathi egesi lubalwa kusetshenziswa ifomula yamandla angaphakathi egesi engezansi.
Amandla kugesi :
Ukuze kubalwe ushintsho lwamandla angaphakathi, izinga lokushisa lokugcina (T) kumele laziwe.₂Bala u-T₂ kusetshenziswa ifomula yomthetho kaGay-Lussac.
Umthetho kaGay-Lussac (i-isochoric/ivolumu engaguquki) :
Bala ushintsho lwamandla kugesi:
Ushintsho lwamandla angaphakathi egesi luyi-5986,8 Joules.

3. Ingqikithi yama-mole angu-0,2 egesi ye-monatomic ekushiseni okungu-27^oI-C isesitsheni esivaliwe. Ukushisa okumele kufakwe ukuze kwandiswe izinga lokushisa legesi kufinyelele ku-400 K… I-Universal gas constant (R) = 8,315 J/mol.K
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I-Diketahui :
Inani lama-moles (n) = 0,2 mol
Izinga lokushisa lokuqala (T)₁= = 27^oC + 273 = 300 K
Izinga lokushisa lokugcina (T)₂) = 400 K
I-Universal gas constant (R) = 8,315 J/mol.K
Kubuziwe : Ukushisa kuthathwe (Q)
Jawab :
Enqubweni ye-isochoric, ivolumu ihlala ingaguquki ngakho akukho msebenzi owenziwa yigesi (W = 0).
Umthetho Wokuqala We-Thermodynamics :
Ukushisa okumuncwayo (Q) = ukwanda kwamandla angaphakathi egesi (U). Ushintsho kumandla angaphakathi egesi lubalwa kusetshenziswa ifomula yamandla angaphakathi engezansi.
Amandla kugesi :
Ukushisa okumuncwa yigesi = ushintsho lwamandla angaphakathi = 249,45 Joules.