阿摩線上測驗登入

首頁 > 研究所、轉學考(插大)◆材料熱力學 > 110年 - 110 國立清華大學碩士班考試入學試題_工程與系統科學系/甲組:材料熱力學#105330 > 申論題

題組內容

Question 6

One mole of a diatomic ideal gas

initially at 1 Pa and 298 K undergoes the following cycle:

a. A constant volume heating to twice the initial temperature.

相關申論題

Question 1 (a) The phase diagrams of two alloys (alloy 1 and alloy 2) are illustrated below. In which of the two alloys is there an energetic tendency for the A and B atoms to attract to each other? Briefly explain your answer.

(b) Schematically draw the free energy curves vs concentration for the A-B alloy at temperatures T1 and T2 for alloy 1, and Ts for alloy 2, and briefly explain how the phase diagrams are constructed from the free energy curves. Make sure to clearly label all the curves.

(a) Determine the maximum allowed partial pressure of water vapor in wet hydrogen (H2 + H2O) at 1 atm in which manganese (Mn) can be heated without oxidation occurring at 1100℃

(b) Is the oxidation of Mn by water vapor exothermic or endothermic? Justify youranswer with data. There is an Ellingham diagram on the next page for you to check the answer.Data:

(a) Derive an expression for the change in temperature, AT, between the final equilibrated state after M has been dropped and the initial state before M is dropped. Write your answer in terms of M, h, 8, and the properties of the fluid.

(b) Derive an expression for the change in volume AV with an initial volume V1.

Question 4 Calculate the heat required to form a liquid solution at 1356 K starting with 1 mole ofCu and 1 mole of Ag at 298 K. At 1356 K the molar heat of mixing of liquid Cu andliquid Ag is given by Data:

Question 5 (a) Derive an expression for . in terms of the state variables, including I, P, S, V, and the measurable properties of the system, including the heat capacities, and C,, the isobaric thermal expansivity, a, and the isothermal compressibility, B. A is the Helmholtz free energy defined as U - TS.

(b) Like (a), derive an expression for in terms of the state variables and measurable properties of the system. G is the Gibbs free energy defined as H -TS.

(c) Do the quantities you derived in (a) and (b) depend on the size of the system (i.e. is it intensive or extensive)? Here are some useful relationships for you to use:

相關試卷

110年 - 110 國立清華大學碩士班考試入學試題_工程與系統科學系/甲組:材料熱力學#105330

110年 · #105330

110年 - 110 國立臺灣大學_碩士班招生考試_材料科學與工程研究所甲、丙組:材料熱力學#100919

110年 · #100919

阿摩線上測驗

提供最完整的考試資料庫，包含歷年試題、詳解、申論題等學習資源，
幫助學生有效準備各類考試。22

最新資料

© 2008-2026 Yamol Tech Ltd. All Rights Reserved.
阿摩線上測驗--最強大的互動線上測驗版權所有

如有任何問題或建議，歡迎聯繫我們