Elementary Principles of Chemical Processes, Binder Ready Version

4th Edition

ISBN: 9781118431221

Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard

Publisher: WILEY

See similar textbooks

Videos

Textbook Question

Chapter 5, Problem 5.53P

5.53.20 Chemicals are stored in a laboratory with volume V(m³). As a consequence of poor laboratory practices, a hazardous species, A, enters the room air (from inside the room) at a constant rate Chapter 5, Problem 5.53P, 5.53.20 Chemicals are stored in a laboratory with volume V(m3). As a consequence of poor laboratory , example 1 The room is ventilated with clean air ?owing at a constant rate The average concentration of A in the room air builds up until it reaches a steady-state value

(a) List at least four situations that could lead to A getting into the room air.

(b) Assume that the A is perfectly mixed with the room air and derive the formula

Chapter 5, Problem 5.53P, 5.53.20 Chemicals are stored in a laboratory with volume V(m3). As a consequence of poor laboratory , example 4

(c) The assumption of perfect mixing is never justi?ed when the enclosed space is a room (as opposed to, say, a stirred reactor). In practice, the concentration of A varies from one point in the room to another: it is relatively high near the point where A enters the room air and relatively low in regions far from that point, including the ventilator outlet duct. If we say that Chapter 5, Problem 5.53P, 5.53.20 Chemicals are stored in a laboratory with volume V(m3). As a consequence of poor laboratory , example 5 where is a nonideal mixing factor (generally between 0.1 and 0.5, with the lowest value corresponding to the poorest mixing). then the equation of Part (b) becomes

Chapter 5, Problem 5.53P, 5.53.20 Chemicals are stored in a laboratory with volume V(m3). As a consequence of poor laboratory , example 7

Use this equation and the ideal-gas equation of state to derive the following expression for the average mole fraction of A in the room air:

Chapter 5, Problem 5.53P, 5.53.20 Chemicals are stored in a laboratory with volume V(m3). As a consequence of poor laboratory , example 8

where M_A is the molecular weight of A.

(b) The permissible exposure level (PEL) for styrene (M = 104.14) de?ned by the U.S. Occupational Safety and Health Administration is 50 ppm (molar basis).21 An open storage tank in a polymerization laboratory contains styrene. The evaporation rate from this tank is estimated to be 9.0 g/h. Room temperature is 20°C. Assuming that the laboratory air is reasonably well mixed (so that k = 0.5), calculate the minimum ventilation rate (m³/h) required to keep the average styrene concentration at or below the PEL. Then give several reasons why working in the laboratory might still be hazardous if the calculated minimum ventilation rate is used.

(e) Would the hazard level in the situation described in Part (d) increase or decrease if the temperature in the room were to increase? (Increase, decrease, no way to tell.) Explain your answer, citing at least two effects of temperature in your explanation.

Expert Solution & Answer

Want to see the full answer?

Check out a sample textbook solution

See solution

Chapter 5, Problem 5.52P

Chapter 5, Problem 5.54P

Students have asked these similar questions

Chemical Engineering Question

A steam boiler or steam generator is a device used to produce steam by transferring heat to water. In our case, the combustion chamber is fueled with propane (C3H8) at a flowrate of 50.0 mol/h in an excess air of 50%. Assume that both propane and air are fed at 25ºC and the combustion gases leave the chamber at 200ºC. Pressure can be assumed to be atmospheric.* Determine: 1. The heat obtained assuming complete combustion. Compare the results using elements or compounds 2. The steam flowrate that could be generated if the heat is directed to obtain superheated steam at 2 bar and 160ºC from saturated liquid water at this pressure solve

In a surface coating operation, a polymer (plastic) dissolved in liquid acetone is sprayed on a solid surface and a stream of hot air is then blown over the surface, vaporizing the acetone and leaving a residual polymer film of uniform thickness. Because environmental standards do not allow discharg- ing acetone into the atmosphere, a proposal to incinerate the stream is to be evaluated. The proposed process uses two parallel columns containing beds of solid particles. The air– acetone stream, which contains acetone and oxygen in stoichiometric proportion, enters one of the beds at 1500 mm Hg absolute at a rate of 1410 standard cubic meters per minute. The particles in the bed have been preheated and transfer heat to the gas. The mixture ignites when its temperature reaches 562 C, and combustion takes place rapidly and adiabatically. The combustion products then pass through and heat the particles in the second bed, cooling down to 350 C in the process. Period- ically the flow is…

Chapter 5 Solutions

Elementary Principles of Chemical Processes, Binder Ready Version

Ch. 5 - A liquid mixture containing 40.0 wt% n-octane and...Ch. 5 - Prob. 5.2P Ch. 5 - Prob. 5.3P Ch. 5 - Prob. 5.4P Ch. 5 - Prob. 5.5P Ch. 5 - Prob. 5.6P Ch. 5 - Prob. 5.7P Ch. 5 - Prob. 5.8P Ch. 5 - Prob. 5.9P Ch. 5 - Prob. 5.10P

Ch. 5 - Prob. 5.11P Ch. 5 - Prob. 5.12P Ch. 5 - Prob. 5.13P Ch. 5 - Prob. 5.14P Ch. 5 - Prob. 5.15P Ch. 5 - Prob. 5.16P Ch. 5 - Prob. 5.17P Ch. 5 - Prob. 5.18P Ch. 5 - Prob. 5.19P Ch. 5 - A device has been designed to measure the flow...Ch. 5 - Prob. 5.21P Ch. 5 - Prob. 5.22P Ch. 5 - Spray drying is a process in which a liquid...Ch. 5 - Prob. 5.24P Ch. 5 - Lewis12 describes the hazards of breathing air...Ch. 5 - A stream of air at 35°C and a gauge pressure of...Ch. 5 - Prob. 5.27P Ch. 5 - In froth ?otation, air is bubbled through an...Ch. 5 - Prob. 5.29P Ch. 5 - Prob. 5.30P Ch. 5 - Bread is typically made by ?rst dissolving...Ch. 5 - Prob. 5.32P Ch. 5 - Prob. 5.33P Ch. 5 - Prob. 5.34P Ch. 5 - Prob. 5.35P Ch. 5 - Prob. 5.36P Ch. 5 - Prob. 5.37P Ch. 5 - Prob. 5.38P Ch. 5 - Prob. 5.39P Ch. 5 - A spray-drying operation similar to that described...Ch. 5 - Prob. 5.41P Ch. 5 - Fermentation is a biochemical process in which a...Ch. 5 - Prob. 5.43P Ch. 5 - Prob. 5.44P Ch. 5 - Ethane at 25°C and 1.1 atm (abs) flowing at a rate...Ch. 5 - The ?ow of air to a gas-?red boiler furnace is...Ch. 5 - Prob. 5.47P Ch. 5 - The oxidation of nitric oxide NO+12O2NO2 takes...Ch. 5 - Prob. 5.49P Ch. 5 - 5.50.19 In chemical vapor deposition (CVD), a...Ch. 5 - A gas turbine power plant receives a shipment of...Ch. 5 - Prob. 5.52P Ch. 5 - 5.53.20 Chemicals are stored in a laboratory with...Ch. 5 - Prob. 5.54P Ch. 5 - Prob. 5.55P Ch. 5 - A stream of ho dry nitrogen flows through a...Ch. 5 - Prob. 5.57P Ch. 5 - You have purchased a gas cylinder that is supposed...Ch. 5 - The current global reliance on fossil fuels for...Ch. 5 - Two humid gas streams are combined in a heated...Ch. 5 - Most of the concrete used in the construction of...Ch. 5 - The ultimate analysis of a No. 4 fuel oil is 86.47...Ch. 5 - A stream of liquid n-pentane flows at a rate of...Ch. 5 - Alka-Seltzer( is an over-the-counter medicine used...Ch. 5 - Hydrogen sul?de has the distinctive unpleasant...Ch. 5 - The quantity of sulfuric acid used globally places...Ch. 5 - A small power plant produces 500 MW of electricity...Ch. 5 - You have been assigned the task of measuring the...Ch. 5 - Prob. 5.69P Ch. 5 - Methanol is synthesized from carbon monoxide and...Ch. 5 - Prob. 5.71P Ch. 5 - Prob. 5.72P Ch. 5 - Steam reforming is an important technology for...Ch. 5 - A ?owchart of a methanol synthesis process is...Ch. 5 - The measured volumetric flow rate of ethane at...Ch. 5 - Prob. 5.76P Ch. 5 - Methanol is to be delivered to a process unit at a...Ch. 5 - Prob. 5.78P Ch. 5 - Prob. 5.79P Ch. 5 - Prob. 5.80P Ch. 5 - Prob. 5.81P Ch. 5 - Prob. 5.82P Ch. 5 - Prob. 5.83P Ch. 5 - Prob. 5.84P Ch. 5 - Prob. 5.85P Ch. 5 - Prob. 5.86P Ch. 5 - Prob. 5.87P Ch. 5 - Prob. 5.88P Ch. 5 - Prob. 5.89P Ch. 5 - A fuel cell is an electrochemical device that...Ch. 5 - In a metered-dose inhaler (MDI), such as those...Ch. 5 - Prob. 5.92P Ch. 5 - Prob. 5.93P Ch. 5 - Approximately 150 SCFM (standard cubic feet per...Ch. 5 - Prob. 5.95P Ch. 5 - Prob. 5.96P Ch. 5 - Prob. 5.97P Ch. 5 - The product gas from a coal gasification plant...Ch. 5 - Prob. 5.99P Ch. 5 - Prob. 5.100P Ch. 5 - A gas mixture consisting of 15.0 mole% methane....Ch. 5 - A system has been devised to store acetonitrile...Ch. 5 - Prob. 5.103P Ch. 5 - Prob. 5.104P

Additional Engineering Textbook Solutions

Find more solutions based on key concepts

The uniform plate has a weight of 500 lb. Determine the tension in each of the supporting cables. Prob. F5-7

INTERNATIONAL EDITION---Engineering Mechanics: Statics, 14th edition (SI unit)

TeamLeader Class In a particular factory, a team leader is an hourly paid production worker that leads a small ...

Starting Out with Java: From Control Structures through Data Structures (4th Edition) (What's New in Computer Science)

Write an SQL statement to display the breed, type, and DOB for all pets having the type Dog and the breed Std. ...

Database Concepts (8th Edition)

What is the difference between oblique machining and orthogonal machining?

Degarmo's Materials And Processes In Manufacturing

Repeat Exercise 1 for a credit card account instead of a credit card. An account represents the charges and pay...

Java: An Introduction to Problem Solving and Programming (8th Edition)

The current source in the circuit shown generates the current pulse Find (a) v (0); (b) the instant of time gr...

Electric Circuits. (11th Edition)

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemical-engineering and related others by exploring similar questions and additional content below.