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化学131 c.Lec.05.热力学和化学动力学.能量均分定理Chem 131C. Lec. 05. Thermodynamics and Chemical Dynamics. The Equipartition theorem |
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| 课程网址: | http://ocw.uci.edu/lectures/chem_131c_lec_05_thermodynamics_and_c... |
| 主讲教师: | Reginald Penner |
| 开课单位: | 加州大学尔湾分校 |
| 开课时间: | 信息不详。欢迎您在右侧留言补充。 |
| 课程语种: | 英语 |
| 中文简介: |  |
| 课程简介: | UCI C[url]em 131C T[url]ermodynamics and C[url]emical Dynamics (Spring 2012)Lec 05. T[url]ermodynamics and C[url]emical Dynamics -- T[url]e Equipartition T[url]eorum --View t[url]e complete course: [url]ttp://ocw.uci.edu/courses/c[url]em_131c_t[url]ermodynamics_and_c[url]emical_dynamics.[url]tmlInstructor: Reginald Penner, P[url].D.License: Creative Commons BY-NC-SATerms of Use: [url]ttp://ocw.uci.edu/info.More courses at [url]ttp://ocw.uci.eduDescription: In C[url]emistry 131C, students will study [url]ow to calculate macroscopic c[url]emical properties of systems. T[url]is course will build on t[url]e microscopic understanding (C[url]emical P[url]ysics) to reinforce and expand your understanding of t[url]e basic t[url]ermo-c[url]emistry concepts from General C[url]emistry (P[url]ysical C[url]emistry.) We t[url]en go on to study [url]ow c[url]emical reaction rates are measured and calculated from molecular properties. Topics covered include: Energy, entropy, and t[url]e t[url]ermodynamic potentials; C[url]emical equilibrium; and C[url]emical kinetics.T[url]ermodynamics and C[url]emical Dynamics (C[url]em 131C) is part of OpenC[url]em: [url]ttp://ocw.uci.edu/openc[url]em/T[url]is video is part of a 27-lecture undergraduate-level course titled "T[url]ermodynamics and C[url]emical Dynamics" taug[url]t at UC Irvine by Professor Reginald M. Penner.Recorded on April 11, 2012.Slide Information:00:21 - Announcements02:34 - Diagram: in real molecules, t[url]e situation is considerably more complex t[url]an t[url]e Harmonic Oscillator03:20 - We [url]ave a very [url]ig[url] density of translational states t[url]at are not, in reality...03:36 - Diagram: t[url]ese translational states are nested wit[url]in rotational states03:58 - Diagrams (many rotational states)04:23 - ...we can treat eac[url] of t[url]ese energetic manifolds...05:45 - W[url]at's in t[url]is Lecture05:51 - Your book mainly focuses attention on...07:27 - Grap[url] 5-13: Here is w[url]at [url]appens to Cv as a function of T for a diatomic molecule:10:04 - Grap[url] 5-13 T[url]ese are t[url]e rotation temperature...11:08 - Grap[url] 5-13 Here is w[url]at [url]appens to Cv as a function of T...11:37 - T[url]e Equipartition T[url]eorum12:10 - T[url]e Equipartition T[url]eorum (wit[url] diagram)13:17 - consider t[url]e classical Hamiltonian for a I D [url]armonic oscillator:14:16 - now you'll recall t[url]at t[url]e [url]eat capacity...15:03 - Example: Formula15:50 - Grap[url]16:13 - ...t[url]is is also t[url]e [url]eat capacity for all monoatomic gases...18:29 - For a linear molecule...19:41 - Grap[url] (Translation + Rotation)20:26 - For a nonlinear molecule...20:54 - W[url]at about for [url]ig[url]er temperatures?22:08 - so following t[url]roug[url] wit[url] t[url]e predictions of t[url]e equipartition t[url]eorem...23:05 - so for a diatomic molecule...24:24 - Example: Use t[url]e equipartition t[url]eorem to estimate...31:18 - Example: Use t[url]e equipartition t[url]eorum to estimate... (Part B)34:36 - Example: (C[url]art) "Use t[url]e equipartition t[url]eorum to estimate... (Part C)38:55 - Calculate Eac[url] Term39:18 - We'll Start wit[url] Translation...39:40 - T[url]e translational energy of a classical gas molecule is:40:15 - ...And a quantum mec[url]anical gas [url]as energies given by t[url]e particle-in-a-box model.40:23 - we'll concentrate attention now on ideal monoatomic gases...41:27 - consider first a monoatomic gas in one dimension.43:59 - ...now t[url]ese energies are very closely spaced. Consider, for example, an argon atom in a box...45:25 - Log Scale45:52 - ...if t[url]ese states are quasi-continuous, we can rewrite t[url]is summation...46:54 - so after integration we [url]ave...47:05 - Example "Calculate..."48:26 - W[url]at would...t[url]ree dimensional cube?49:36 - ...in terms of...now we calculate its transitional energy.50:03 - ...and t[url]is yields a very simple expression:Required attribution: Penner, Reginald T[url]ermodynamics and C[url]emical Dynamics 131C (UCI OpenCourseWare: University of California, Irvine), [url]ttp://ocw.uci.edu/courses/c[url]em_131c_t[url]ermodynamics_and_c[url]emical_dynamics.[url]tml. [Access date]. License: Creative Commons Attribution-S[url]areAlike 3.0 United States License. |
| 关 键 词: | chemical; potential; thermodynamics |
| 课程来源: | 信息不详。欢迎您在右侧留言补充。 |
| 最后编审: | 2017-09-08：zmj |
| 阅读次数: | 16 |