Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ta dace)

3 Misalan tambayoyi kan amfani da dokar thermodynamics ta farko a cikin hanyoyin isochoric (ƙari mai ɗorewa)

1. Jadawalin matsin lamba (P) akan girma (V) na iskar da ke fuskantar tsarin isochoric. Aikin da iskar gas ke yi a cikin tsarin AB shine…

Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 1Tattaunawa
Tsarin AB = Tsarin isochoric (ƙarfin da ba ya canzawa). A girman isochoric, girman iskar gas (da girman sararin) ba ya canzawa don haka babu wani aiki da iskar gas ɗin ke yi.

2. Moles uku na iskar gas mai siffar monatomic a zafin jiki na 47oC da matsin lamba 2 x 105 Pascal yana yin aikin isochoric har sai matsin lamba ya ƙaru zuwa 3 x 105 Pascal. Canjin makamashin ciki na iskar gas shine… Daidaiton iskar gas na duniya (R) = 8,315 J/mol.K
Tattaunawa
An sani :
Zafin farko (T)1) = 47oC + 273 = 320 K
Matsi na farko (P)1= 2 x 105 Pa
Matsi na ƙarshe (P)2= 3 x 105 Pa
Daidaiton iskar gas na duniya (R) = 8,315 J/mol.K
Adadin moles (n) = 3
An tambaya : Canje-canje a makamashi a cikin iskar gas
Jawab :
A cikin tsarin isochoric, ƙarar ta kasance ba ta canzawa don haka babu wani aiki da gas ɗin ke yi (W = 0).
Dokar Farko ta Thermodynamics :
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 6Dangane da yadda aka samo wannan dabarar, an kammala da cewa a cikin tsarin isochoric, zafi da aka ƙara wa tsarin (Q) yana sa kuzarin ciki na tsarin (U) ya ƙaru. Akasin haka, zafi da tsarin ke fitarwa yana sa kuzarin ciki na tsarin ya ragu. Nawa ne canjin makamashin ciki na iskar gas ɗin? Ana ƙididdige canjin makamashin ciki na iskar gas ta amfani da dabarar makamashin ciki da ke ƙasa.
Makamashi a cikin iskar gas :
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 3Domin a ƙididdige canjin makamashin ciki, dole ne a san zafin ƙarshe (T).2). Lissafin T2 ta amfani da dabarar dokar Gay-Lussac.
Dokar Gay-Lussac (ƙarin isochoric/ƙari mai ɗorewa) :
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 4Lissafa canjin makamashi a cikin iskar gas:
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 5Canjin makamashin cikin gida na iskar gas shine Joules 5986,8.

3. Jimillar moles 0,2 na iskar gas mai motsi a zafin jiki na 27oC yana cikin akwati mai rufewa. Zafin da dole ne a sha don ƙara zafin iskar gas zuwa 400 K shine… Daidaiton iskar gas na duniya (R) = 8,315 J/mol.K
Tattaunawa
An sani :
Adadin moles (n) = moles 0,2
Zafin farko (T)1) = 27oC + 273 = 300 K
Zafin ƙarshe (T)2) = 400 K
Daidaiton iskar gas na duniya (R) = 8,315 J/mol.K
An tambaya : Sha da zafi (Q)
Jawab :
A cikin tsarin isochoric, ƙarar ta kasance ba ta canzawa don haka babu wani aiki da gas ɗin ke yi (W = 0).
Dokar Farko ta Thermodynamics :
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 2Zafin da ake sha (Q) = ƙaruwa a cikin makamashin ciki na iskar gas (U). Ana ƙididdige canjin makamashin ciki na iskar gas ta amfani da dabarar makamashin ciki da ke ƙasa.
Makamashi a cikin iskar gas :
Misali na amfani da dokar farko ta thermodynamics ga tsarin isochoric (ƙaramar da ba ta canzawa) - 7Zafin da iskar gas ke sha = canjin makamashin ciki = Joules 249,45.

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