鐑姏瀛︾浜屽畾寰嬭鍚庝範棰樼瓟妗?/p>
涔犻
1
鍦?/p>
300 K
锛?/p>
100 kPa
鍘嬪姏涓嬶紝
2 mol A
鍜?/p>
2 mol B
鐨勭悊鎯虫皵浣撳畾娓┿�佸畾鍘嬫贩鍚堝悗锛屽啀瀹?/p>
瀹瑰姞鐑埌
600 K
銆傛眰鏁翠釜杩囩▼鐨?/p>
S
涓鸿嫢骞插凡鐭?/p>
C
V
m
A
= 1
5
R
锛?/p>
C
V
m
B
= 2
5
R
[
棰?/p>
瑙?/p>
]
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
B(g)
2mol
A(g)
2mol
锛?/p>
锛?/p>
绾�?/p>
300
100
1
K
kPa
锛?/p>
锛?/p>
锛?/p>
飩?/p>
飩?/p>
飩撅偩飩撅偩
娣峰悎鎬?
锛?/p>
锛?/p>
2mol
A
2mol
B
100kPa
300K
1
飥?/p>
飥?/p>
飥?/p>
飪?
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
飪?/p>
p
T
瀹氬
锛?/p>
锛?/p>
飩?/p>
飩?/p>
飩?/p>
飩?/p>
2
娣峰悎鎬?/p>
锛?/p>
锛?/p>
2mol
A
2mol
B
600K
2
飥?/p>
飥?/p>
飪?/p>
飪?/p>
飪?
飪?/p>
飪?/p>
T
S
=
S
1
+
S
2
锛?/p>
n
= 2 mol
S
1
= 2
nR
ln ( 2
V
/
V
)
= 2nR
ln2
S
2
= ( 1
5
nR
+ 2
5
nR
) ln
锛?/p>
T
2
/
T
1
锛?/p>
= 4
nR
ln2
鎵�浠?/p>
S
= 6
nR
ln2= ( 6
2 mol
8
314 J
路
K
1
路
mol
1
) ln2 = 69
15 J
路
K
1
[
瀵煎紩
]
鏈绗竴姝ヤ负鐞嗘兂姘斾綋瀹氭俯瀹氬帇涓嬬殑娣峰悎鐔碉紝
鐩稿綋浜庡彂鐢熸贩鍚堢殑姘斾綋鍒嗗埆鍦ㄥ畾娓╂潯浠?/p>
涓嬬殑闄嶅帇杩囩▼锛?/p>
绗簩姝ュ彲瑙嗕负涓ょ鐞嗘兂姘斾綋鍒嗗埆杩涜瀹氬闄嶆俯杩囩▼锛?/p>
璁＄畻鏈鐨勫叧閿槸鎺屾彙
鐞嗘兂姘斾綋鍚勭鍙樺寲杩囩▼鐔靛彉鐨勮绠楀叕寮忋�?/p>
涔犻
2
2 mol
鏌愮悊鎯虫皵浣擄紝鍏跺畾瀹规懇灏旂儹瀹?/p>
C
v
锛?/p>
m
=
锛岀敱
500 K
锛?/p>
405
2 kPa
鐨勫鎬侊紝渚濇缁忓巻涓?/p>
鍒楄繃绋嬶細
(1)
鎭掑鍘?/p>
202
6 kPa
涓嬶紝缁濈儹鑶ㄨ儉鑷冲钩琛℃�侊紱
(2)
鍐嶅彲閫嗙粷鐑啫鑳�鑷?/p>
101
3 kPa
锛?/p>
(3)
鏈�鍚庡畾瀹瑰姞鐑嚦
500 K
鐨勭粓鎬併�?/p>
璇曟眰鏁翠釜杩囩▼鐨?/p>
Q
锛?/p>
W
锛?/p>
U
锛?/p>
H
鍙?/p>
S
銆?/p>
[
棰樿В
]
锛?/p>
1
锛?/p>
Q
1
= 0
锛?/p>
U
1
=
W
1
锛?/p>