課程名稱︰普通化學甲
課程性質︰必修
課程教師︰林萬寅
開課學院：理學院
開課系所︰物理系
考試日期（年月日）︰08.11.26
考試時限（分鐘）：15min
是否需發放獎勵金：是
（如未明確表示，則不予發放）
試題 :
A piston exerting a pressure of 1.0 atm rests on the surface of waterat 100℃
(left figure). The pressure is reduced infinitesimally, and as a result 4.5g
of water evaporates and absorbs 10.0kJ of heat (right figure). Find q, w, △H
of the process. Also find the molar enthalpy of vaporization of water at 100℃.
(assume ideal behavior of water vapor; R = 8.314 J．K．mol^-1
dp:infimitesimally small
▕ ︳ ▕ l-dp ︳
▕ 1 atm ︳ ▕════════︳
▕ │ ︳———→ ▕ 4.5g ︳
▕═══════︳ ▕ H2O(g), 100℃ ︳
▕ H2O(l),100℃ ︳ ▕————————︳
▕ ︳ ▕ H2O(l), 100℃ ︳
▕＿＿＿＿＿＿＿︳ ▕╴╴╴╴╴╴╴╴︳
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