Elementary Principles of Chemical Processes, Binder Ready Version
Elementary Principles of Chemical Processes, Binder Ready Version
4th Edition
ISBN: 9781118431221
Author: Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher: WILEY
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Chapter 3, Problem 3.38P
Interpretation Introduction

(a)

Interpretation:

The molarity of sulfuric acid solution should be calculated.

Concept introduction:

The molarity of a solution is defined as number of moles of solute in 1 L of solution. It is mathematically represented as follows:

M=nV

Here, n is number of moles of solute, V is volume of solution in L.

Number of moles can be calculated from mass and molar mass of a substance as follows:

n=mM

Here, m is mass and M is molar mass.

Interpretation Introduction

(b)

Interpretation:

The time to fill a 55-gallon drum and the sulfuric acid contained in the drum should be calculated.

Concept introduction:

Time can be calculated from volume and flow rate as follows:

t=VVflow rate

Here, V is volume of drum and Vflow rate is flow rate of sulfuric acid.

The mass of any substance can be calculated from its density as follows:

m=d×V

Here, m is mass, d is density and V is volume.

Interpretation Introduction

(c)

Interpretation:

Estimate the time it takes the solution to flow from the pipe inlet to the outlet.

Concept introduction:

The mean velocity of a pipe can be calculated from the following formula:

v=Vflow rateA

Here, Vflow rate is volumetric flow rate and A is cross sectional area.

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For each set of measurements below, calculate the Grubbs statistic, G, look up the appropriate critical value of G from Table 4.6, and determine whether the Grubbs test supports discarding the first value in the list at the 95% level of confidence. a) 106.0, 165.0, 167.5, 170.5, 163.5, 170.7 (Geale -2.028; Gerit 1.822; yes, the Grubbs test supports discarding 106.0) b) 214.8, 263.0, 229.9, 236.9, 221.8, 230.8, 241.1 c) 357.0, 309.3, 304.9, 314.8, 305.8, 295.3, 284.7, 299.5 TABLE 4-6 Critical values of G for rejection of outlier Number of observations otsulsve os Tenos nagsibarito G to buboxy (95% confidence) 456 1.463 1.672 1.822 7 1.938 8 upa 2.032 9 2.110 10 2.176 - 1 12 15 20 11 2.234 2.285 2.409 2.557
#1 A irreversible isothermal gas-phase isomerization reaction is given as: AB. This reaction is conducted in a 400L batch reactor and 100 mol of A (NAD = 100 mol) is charged into this reactor. The rate of reaction is determined as a function of the conversion of reactant A and the results are given below. The temperature was constant at 500K and the total pressure was constant at 830 kPa. The entering number of moles of species A is 100 mol. Calculate the time necessary to achieve 80% conversion. 0 0.1 0.2 0.4 -TA (mol/m³.s) 0.45 0.37 0.3 0.195 0.6 0.113 0.7 0.079 0.8 0.05
#3 A irreversible isothermal liquid-phase reaction is given as: A → B is conducted in continuous flow systems. The rate of reaction is determined as a function of the conversion of reactant A and the results are given below. The temperature was constant at 500K. The entering molar flow rate of A is 0.4 mol/min. a) If this reaction is conducted in two CSTRS in series. Calculate the required reactor volume of each CSTRS if conversion X₁ = 0.4 and conversion X2 = 0.8. b) If this reaction is conducted in two PFRS in series. Calculate the required reactor volume of each PFRS if conversion X₁ = 0.4 and conversion X2 = 0.8. c) If this reaction is conducted in a PFR followed by a CSTR. Calculate the required reactor volume of PFR if conversion X₁ = 0.4 and of CSTR if conversion X2 = 0.8. X -A (mol/L.min) 0 0.1 0.2 0.4 0.6 0.7 0.8 0.45 0.37 0.3 0.195 0.113 0.079 0.05

Chapter 3 Solutions

Elementary Principles of Chemical Processes, Binder Ready Version

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