绗簩绔?/p>
鐑姏瀛︾涓�瀹氬緥
2.1
1mol
鐞嗘兂姘斾綋鍦ㄦ亽瀹氬帇鍔涗笅娓╁害鍗囬珮
1
鈩冿紝姹傝繃绋嬩腑绯荤粺涓庣幆澧冧氦鎹㈢殑鍔熴�?/p>
瑙ｏ細鐞嗘兂姘斾綋
n = 1mol
瀵逛簬鐞嗘兂姘斾綋鎭掑帇杩囩▼
,
搴旂敤寮忥紙
2.2.3
锛?/p>
W =
锛?/p>
p
amb
螖V =
锛?/p>
p(V
2
-V
1
) =
锛?/p>
(nRT
2
-nRT
1
) =
锛?/p>
8.314J
2.2
1mol
姘磋捀姘?/p>
(H
2
O,g)
鍦?/p>
100
鈩?/p>
,101.325kPa
涓嬪叏閮ㄥ嚌缁撴垚娑叉�佹按銆傛眰杩囩▼鐨勫姛銆傚亣璁撅細
鐩稿浜庢按钂告皵鐨勪綋绉紝娑叉�佹按鐨勪綋绉彲浠ュ拷鐣ヤ笉璁°�?/p>
瑙?/p>
: n = 1mol
鎭掓俯鎭掑帇鐩稿彉杩囩▼
,
姘磋捀姘斿彲鐪嬩綔鐞嗘兂姘斾綋
,
搴旂敤寮忥紙
2.2.3
锛?/p>
W =
锛?/p>
p
amb
螖
V =
锛?/p>
p(V
l
-V
g
)
鈮?/p>
pVg = nRT = 3.102kJ
2.3
鍦?/p>
25
鈩冨強鎭掑畾鍘嬪姏涓嬶紝鐢佃В
1mol
姘?/p>
(H
2
O,l)
锛屾眰杩囩▼鐨勪綋绉姛銆?/p>
H
2
O(l)
锛?/p>
H
2
(g)
+
1/2O
2
(g)
瑙?/p>
: n = 1mol
鎭掓俯鎭掑帇鍖栧鍙樺寲杩囩▼
,
搴旂敤寮忥紙
2.2.3
锛?/p>
W=
锛?/p>
p
amb
螖
V =
锛?/p>
(p
2
V
2
-p
1
V
1
)
鈮堬紞
p
2
V
2
=
锛?/p>
n
2
RT=
锛?/p>
3.718kJ
2.4
绯荤粺鐢辩浉鍚岀殑濮嬫�佺粡杩囦笉鍚岄�斿緞杈惧埌鐩稿悓鐨勬湯鎬併�傝嫢閫斿緞
a
鐨?/p>
Q
a
=2.078kJ,Wa=
锛?/p>
4.157kJ
锛涜�岄�斿緞
b
鐨?/p>
Q
b
=
锛?/p>
0.692kJ
銆傛眰
W
b
.
瑙?/p>
:
鐑姏瀛﹁兘鍙樺彧涓庡鏈�佹湁鍏?/p>
,
涓庡叿浣撻�斿緞鏃犲叧
,
鏁?/p>
螖U
a
= 螖U
b
鐢辩儹鍔涘绗竴瀹氬緥鍙緱
Qa + Wa = Q
b
+ W
b
鈭?/p>
W
b
= Q
a
+ W
a
锛?/p>
Q
b
=
锛?/p>
1.387kJ