Midterm '07

Midterm '07 - CHEM 132 MIDTERM EXAM K. Lindenberg Winter...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: CHEM 132 MIDTERM EXAM K. Lindenberg Winter 2007 STUDENT ID _ 1. /21 /8 /16 /27 /8 /7 /10 /8 TAL MIDTERM /105 TOTAL NUMBER OF PAGES INCLUDING THIS COVER PAGE: 13. NOTE: As announced, this exam is based on homeworks and book examples, with details changed. After the exam I will point you to the homework problems and examples that were used. GAS CONSTANT: R = 8.31451 J K-1 mo!-l = 8.206 x 10-2 L atm K-1 mo!-l = 62.364 L Torr K-1 mo!-l OTHER CONSTANTS AND CONVERSIONS: 1 V = 1 J/C; F = 96485 C/mo! 1 , P~ Liquid (I) I I I I Vapor (v) I I L o PI In this problem we will work with this phase diagram, which should look very familiar to you. The length from XB = 0 to XB = 1 is 7.0cm, and this is a two-component system with components Band C. The length from XB = 0 to point H is 3.4cm, to point E is 4.3cm, and to point I is 5.2cm. (a) For a system whose state corresponds to point E in the phase diagram, what is XB in this state? 1. 21 points total, 3 points each part .•...•- 1 '-t.~----r.O ~ (b) How many phases are present in the system and what are they (e.g. one liquid, liquid and vapor, just vapor, two liquids, etc.)? 2 , CHEM 132 (c) What is the composition in mole fractions of each phase identified in part (b)?-t @~~ 'f..p:> ~ 6·Lf 1-.0 \( G~:: 0,-:r-'t l if>:: ~. ~ +.0 (d) Suppose that the two-component system contains 11 moles of Band 7 moles of C at pressure PE. How many moles of B are present in each of the identified phases? =.. .!.L =- {). t { ,~ " o . 1-Lf r(\ O.-:}'t (\ '6 ""'~- fl'11) /f) 1 =- [t~)( 0 .. 1-- t.t')- \ l ~ ~ = q. ~ rm ~ D.1-4-- 0 .. 4'1 ..t. '1'ra-:.(O,Lf q) [q,~) 11: ~ (I \-4· L) <fl~ 3 '11 i-:. Lt· L (Y1\ ~- r(\~ :: L, ~ rm~- .• , CHEM 132 (e) Suppose now that the system is at point A. How many phases are present and what are they? (f) Suppose that as in part (d) the system contains 11 moles of Band 7 moles of C at pressure P A. How many moles of B are present in each of the identified phases?...
View Full Document

This note was uploaded on 05/22/2008 for the course CHEM 132 taught by Professor Lindenberg during the Winter '08 term at UCSD.

Page1 / 13

Midterm '07 - CHEM 132 MIDTERM EXAM K. Lindenberg Winter...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online