[學科] 熱力學基礎概念~~
有一個概念小弟一直搞不清楚 還麻煩大家了^^"
1.If an ideal gas is expanded at constant pressure
(A) delta E > 0 且 delta S > 0
(B) delta E = 0 且 delta S = 0
(C) delta E = 0 且 delta S < 0
(D) delta E < 0 且 delta S > 0
(E) delta E = 0 且 delta S > 0
ANS: A (補習班給的答案)
小弟不懂得是 膨脹時 不是系統對外界做功嗎?
1.根據E=w+q w<0 E不是也應該變小XD 而且溫度也應該下降?
2.根據PV=nRT V變大T似乎也變大 E變化與T呈正相關 與所以 E > 0
到底怎樣的解釋 才是正確的呢?
--
※ 發信站: 批踢踢實業坊(ptt.cc)
◆ From: 120.126.33.85
推
06/10 15:28, , 1F
06/10 15:28, 1F
推
06/11 00:08, , 2F
06/11 00:08, 2F
推
06/13 19:52, , 3F
06/13 19:52, 3F
→
06/13 19:52, , 4F
06/13 19:52, 4F
推
06/15 01:05, , 5F
06/15 01:05, 5F
→
06/15 01:22, , 6F
06/15 01:22, 6F
→
06/15 01:23, , 7F
06/15 01:23, 7F
→
06/15 01:26, , 8F
06/15 01:26, 8F
→
06/15 13:59, , 9F
06/15 13:59, 9F