Usaha yang Dilakukan Gas 9 36B=2E 92?H2 ;:2 D62?2? , ?CD2? ,6=22

Mudah dan Aktif Belajar Fisika untuk Kelas XI 182

b. Proses Isokhorik

BC6C :C9B: 252=29 ABC6C A6BE3292? 62522? C:CD6 A252 F=E6 D6D2A .2 -:?;2E=29 632=: A6BC222? 62522? 82C :562= ,F=E6D6D2A , E?DE82C:562=56?82? 52? C6=2=E D6D2A :32D?H2 , ?CD2? 2D2E , , O 252 ABC6C :C9B: C:CD6 D:52 6?82=2: A6BE3292? F=E6 C69:?882 EC292 H2?8 5:=2E2? =69 82C C22 56?82? ?= H2:DE , 6BE3292?D62?2?A25282C22?6?H63232? A6BE3292? CE9E 82C :2 CE9E 82C 5:?2:2? D62?2? 52=2 82C 22? 36BD2329 C6A6BD: 5:DE?;E2? A252 .2 =E6 D:52 D6B A6?82BE9 A6BE3292? D62?2? 82C Gambar 8.5 Grafik p–T pada V konstan. p T Gambar 8.6 Grafik p–V pada tekanan p konstan. pPa VL V 1 V 2 ,63E29D23E?836B:C: =:D6B82C:562=A252CE9EL52?D62?2?P 2 -23E?8D6BC63ED5:A2?2C2?9:?8826?42A2:CE9E L:2F=E6D23E?85:3E2D D6D2AD6?DE2?D62?2?82C5:52=2D23E?8 7 :6D29E: , P 2 6BC222?62522?82CA252ABC6C:C9B: , , 2 , 600 K , P 2

c. Proses Isobarik

BC6C:C32B:252=29ABC6CA6BE3292?62522?C:CD6A252D62?2? D6D2A 252 .2 D2A2 329G2 A6BE3292? F=E6 D:52 6?8 92C:=2?A6BE3292?D62?2?,6CE2:56?82?A6BC222?82C:562= , D62?2? ,D6D2A52? , =692B6?2 52?C6=2=ED6D2A22 ?CD2?2D2E O B27:9E3E?82?2?D2B2 52?E?DEABC6C:C32B:D2A2A252 .2252ABC6C:C32B:D62?2?82C5:EC2922?D6D2AC69:?882 A6BE3292?CE9EA25282C22?6?:3E=2?A6BE3292?F=E682CE?DE 6A6BD292?2? 282B D62?2? 82C D6D2A .C292H2?85:=2E2?82CA252ABC6C:C32B:252=29C6CE2:56?82? A6BC222? 36B:ED , O , O Gambar 8.7 Grafik V–T pada tekanan p konstan. Gambar 8.4 Proses isokhorik pada grafik p–V. p p 1 p 2 V V 1 = V 2 Contoh 8.3 Tantangan untuk Anda Menurut Anda, benarkah angin itu tidak mendinginkan suhu, melainkan menaikkan suhu di sekitarnya? = .C292H2?85:=2E2?82CA252ABC6C:CD6B2=52A2D5:9:DE?856?82?23. 9 =? = = =? =? ;E=6 T suhu V volume Termodinamika 183 ,6;E=2982C52=2BE2?8D6BDEDEAF=E6?H2 =:D6BD62?2?2D52?CE9E?H2 L 2CD6BC63ED5:A2?2C2?56?82?D62?2?D6D2AC69:?8826?42A2:CE9EL -6?DE2?F=E682C52?EC292H2?85:=2E2?82CD6BC63ED 7 :6D29E: ,2D =:D6B 2 6BC222?82CA252D62?2?D6D2A252=29 =:D6B =:D6B C69:?882F=E682C6?;25:=:D6B 3 , O O ;E=6

d. Proses Adiabatik

BC6C 25:232D: 252=29 ABC6C A6BE3292? 62522? C:CD6 D2?A2 252?H2 A6BDE2B2? 2=B 56?82? =:?8E?82??H2 2D2E D:52 252 2=B H2?8 5:=6A2C 2EAE? H2?8 5:D6B:2 =69 82C D6BC63ED C69:?882 B27:A252.26?E?;E2?329G2A252ABC6C25:232D: D6B;25:A6BE3292?CE9ED62?2?52?F=E6BC6C:?:36B52C2B2? -00. +..+ H2?8 5:DE=:C2? , ?CD2? 2D2E , , O 52? D6D2A 2D2E O 6?82? 252=29 +. , H2?8 6BEA22? A6B32? 5:?82?2A2C:D2C2=B82CA252D62?2?D6D2A A 52?2A2C:D2C2=B82C A252 F=E6 D6D2A F ,642B2 2D62D:C 36C2B2? D6BC63ED 5:DE=:C A F :32D D:52 252?H2 A6BDE2B2? 2=B 56?82? =:?8E?82? EC292 H2?8 5:=2E2? =69 82C 92?H2 6?8E329 6?6B8: 52=2 6C2B?H2 EC292 D6BC63ED 52A2D 5:D6?DE2? 56?82? 6BE;E 23. 9 C69:?882 5:A6B=69 A6BC222? , O , O 2D2E O O .C292 H2?8 5:=2E2? =69 82C A252 ABC6C 25:232D: 52A2D 5:A6B=69 56?82? 6?88E?22? 23. 9 52? 23. 9 ;:2 62522? 2G2= 52? 62522? 29:B 5:6D29E: ?D9 ABC6C 25:232D: 52=2 69:5EA2? C692B:92B: 252=29 A6E2:2? 82C A2?2C A252 6C:? 5:6C6= 52? 6C:? A6?5:?8:? Gambar 8.8 Grafik p–V pada proses adiabatik lebih curam daripada proses isotermal. V p proses adiabatik proses isotermik p 2 p 1 V 1 V 2 Contoh 8.4 2C:562=6?82=2:6CA2?C:C642B225:232D:E=2E=236C2BD62?2?82C252=29 P 2,6D6=296CA2?C:D62?2?82C6?;25: 2-6?DE2?F=E682C29:B ;:2F=E682CE=2E=2 C6BD2?CD2?D22A=246 Contoh 8.5