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by: Carmela Kilback
Carmela Kilback
GPA 3.92


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Class Notes
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This 3 page Class Notes was uploaded by Carmela Kilback on Wednesday September 9, 2015. The Class Notes belongs to CHEM 475 at University of Washington taught by Staff in Fall. Since its upload, it has received 28 views. For similar materials see /class/192611/chem-475-university-of-washington in Chemistry at University of Washington.


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Date Created: 09/09/15
Chemistry 475 Bill Reinhardt and Eric Heatwole Autumn 2002 I am one lecture behind the home work SO both sets 12 and 13 may be handed in on FRIDAY by 5pm If you have done 12 it s OK to hand it in but either time is ne If you do hand them in together please staple them together Also don t postpone 12 until the last minute you should be able to do it easily following today s lecture Tutorial Thursday will discuss how to move into 2 and 3 dimensions classically and quantum mechanically We will need all of this on Friday as we begin Ch 6 in McQ Exam reView set plus Set 16 to be handed out FRIDAY both due in class on the following Friday before the exam Assignment 14 Read Sections 61 through 64 in Chapter 6 Problem Set 14Due Wed NOV 13 at 5 pm Work problems 123 and 4 from Chapter 6 McQ page 244 Chemistry 475 Autumn 2001 Bill Reinhardt and Catherine Cooksey Comment on 5 set 1 due this pm at 5 This is a calculus and algebra review problem To nd the max calculate dd7 of p7 7 395 exp hc7 kT 711 This is the curve intensity density whose MAX you are seeking as a function of 7 I have used the common notation expx A eX as this avoids complicated superscripts You will need to apply both the chain rule and product of functions rule carefully to get the derivative right Then set it to 0 to nd the maximum At this point use the substitution x hc 7 kT as suggested by McQ and you will arrive after some algebra at his equation which you must solve by trial and error ie guess a value of x plug it in and see ifthe equation is satis ed ifnot make a better Guess and keep going until the equation is solved to a few Sig Figs As McQ gives you the answer this shouldn t be too hard When you have the numerical and dimensionless value of x then solve for 7 maXT 7 has become 7 as you have now found the maximum and you will have derived both the Wien displacement law and it s numerical value NB note that I left out some constants multiplying p as given in McQ Eqn 13 including the d7 which is the width of my observation interval why doesn t that affect the nding of the maximum as a function of 7 We will talk a lot more about such observation windows later so don t worry if you nd this confusing now Assignment 3 Finish chapter 1 read pages 7783 of Ch 3 Problem Set 3 due Wednesday Oct 4quot 5 pm in Box 51 A Using two equations discussed in class and which appear in Section 19 of Chapter 1 of McQ Namely Zez4TES0RZ vaR And va nh27E nh Solve for the two unknowns RH and Vquot And nd R11 4 TE so h2 nz me2 and the corresponding forumla for vn Now using these values of R11 and vn plug into the formula for the total energy hint see how McQ does this E 12mvn2 Zez 4TESOR To derive the Bohr formula of the energy levels of a one electron atom with atomic number Z En Z2 m e 8 802 h2 n2 where n 123 B skim Chapter 2 Sections 3 and 4 or use your notes from the Thursday tutorial and work problems 34 and 7 from Ch 2 of McQ


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