Overview

AFTERNOON SAMPLE EXAMINATION

Instructions for afternoon Session

1. You have four hours to work on the afternoon session. Do not write in this handbook.

2. Answer all forty questions for a total of forty answers. There is no penalty for guessing.

3. Work rapidly and use your time effectively. If you do not know the correct answer, skip it and return to it later.

4. Some problems are presented in both metric and English units. Solve either problem.

5. Mark your answer sheet carefully. Fill in the answer space completely. No marks on the workbook will be evaluated. Multiple answers receive no credit. If you make a mistake, erase completely.

Work all 40 problems in four hours.

P.E. Chemical Engineering Exam Afternoon Session

Fluids

Properties of fluids:

1.	The value of ?, the acentric factor is required in many correlations developed for the calculation of physical properties of liquids and gases. A few relations are available to calculate the value of ?. One such relation is as follows where is the reduced vapor pressure at T r = T/T c = 0.7 The following data are available for toluene in Perry's Handbook. t c = 320 C, P c = 41.6 atm., Vapor pressures of toluene P atm. 1 2 3 5 10 Temp C 110.6 136.5 178 215.8 262.5 The acentric factor for toluene is nearer to 0.35 0.25 0.4 0.29
2.	Watson's correlation allows to calculate the heat of vaporization of a liquid at another...