cheme141-sp11-mt1-Maboudian-soln

# cheme141-sp11-mt1-Maboudian-soln - N ame: 6 Sl Discussion S...

This preview shows pages 1–3. Sign up to view the full content.

Name: 6Sl Discussion section' Su luh'o^ SID: Chemical Engineering Thermodynamics 141- Spring 20Ll Tuesday, February 22, zOLl Midterm | - 70 minutes 100 total points One one-sided 8.5"x 11" equation sheet allowed (20 points) L. Consider an ideal gas. i) (2 points) On the P-V diagram shown below, draw an isothermal curve at T1. ii) (3 points) Show graphically the reversible work for compression from 2Vr to Vr at constant temperature T1. P\ T, iii) (6 points) Show mathematically that the reversible work done on the system at Tr is greater than at T2 where Tr > Tz. Begin from the definition of work' [\M= _ ?JV Q-1 tW= \Jv =) w= [4",v, V r y S,n( e VJ is A conslant, wi.- c?Q fi"h ib oul o.l t 1," ,r l-egr"l . M" k Lhrl Ne orye tfu?t,rl,r'S &o-u,LV,U b" V; ,u, W = Rtl+ W= fu l-+, ZV, W,= Vl,/,nz W,. KT;l^z T, )a, -) W, \fu,

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
I iv) (3 points) Which one of the following expressions does not remain constant in the reversible and adiabatic expansion of an ideal gas? a) Tvn/cu b) TVl:1 @ r* d) PVl R/cn C2ED v) (6 points) Prove that all the o_tfer remain ..ttl1[ Begin from the 1't Law. /u =7disw j" =o,adia,r du=5ru i'it'Ju:tnS1 c )T= - wlv -) -v I t- q_ lV => Cvd t= v Cv dT Jv -= l<-T v C, l^T r !^V t c=) f q/a = v exyG\ =' l vF/cv =(*p|* ,) Kfc, P ED K C, To" So
This is the end of the preview. Sign up to access the rest of the document.

## This document was uploaded on 03/22/2012.

### Page1 / 8

cheme141-sp11-mt1-Maboudian-soln - N ame: 6 Sl Discussion S...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online