(a) Interpretation: It should be determined that how many independent material balance may be written for this system. Concept introduction: The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others. The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Question

Propane is burned completely with excess oxygen. The product gas contains 24.5 mole% CO2, 6.10% CO, 40.8% H2O, and 28.6% O2. (a) Calculate the percentage excess O2 fed to the furnace. (b) A student wrote the stoichiometric equation of the combustion of propane to form CO2 and CO as: 2C3H8 + 11O2 → 3CO2 + 3CO + 8H2O According to this equation, CO2 and CO should be in a ratio of 1/1 in the reaction products, but in the product gas of Part (a) they are in a ratio of 24.8/6.12. Is that result possible? (Hint: Yes.) Explain how

Answer 1

Question

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

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Propane is burned completely with excess oxygen. The product gas contains 24.5 mole% CO2, 6.10% CO, 40.8% H2O, and 28.6% O2. (a) Calculate the percentage excess O2 fed to the furnace. (b) A student wrote the stoichiometric equation of the combustion of propane to form CO2 and CO as: 2C3H8 + 11O2 → 3CO2 + 3CO + 8H2O According to this equation, CO2 and CO should be in a ratio of 1/1 in the reaction products, but in the product gas of Part (a) they are in a ratio of 24.8/6.12. Is that result possible? (Hint: Yes.) Explain how

Enumerate the various methods for catalyst preparation and discuss vividly any one of the methods

2. Design a spherical tank, with a wall thickness of 2.5 cm that will ensure that no more than 45 kg of hydrogen will be lost per year. The tank, which will operate at 500 °C, can be made from nickel, aluminum, copper, or iron (BCC). The diffusion coefficient of hydrogen and the cost per pound for each available material is listed in Table 1. Material Do (m2/s) Q (J/mol) Cost ($/kg) Nickel 5.5 x 10-7 37.2 16.09 Aluminium 1.6 x 10-5 43.2 2.66 Copper 1.1 x 10-6 39.3 9.48 Iron (BCC) 1.2 × 10-7 15.1 0.45 Table 1: Diffusion data for hydrogen at 500 °C and the cost of material.

Answer 2

Question

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

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Answer 3

Question

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Expert Solution & Answer

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Answer 4

Question

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Expert Solution & Answer

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Answer 5

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Answer 6

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Answer 7

Chapter 4, Problem 4.8P

Interpretation Introduction

(a)

Interpretation:

It should be determined that how many independent material balance may be written for this system.

Concept introduction:

The independent material balance is when the stoichiometric equation of anyone of them can not be obtained by adding or subtracting multiples of the stoichiometric equation of the others.

The material balances are non independent; if two molecular species are in same ratio to each other wherever they appear and if two atomic species are in same ratio to each other wherever they occur.

Answer 8

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Answer 9

Interpretation Introduction

(b)

Interpretation:

How many of unknown flow rates and mole fractions must be specified before the other may be calculated?

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Answer 10

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Answer 11

Interpretation Introduction

(c)

Interpretation:

Supposing the values are given for m.1 and x2A, then a series of equations should be given involving only a single unknown for the remaining variables. The variables should be circled for which the problem is solved.

Concept introduction:

In order to understand different variables and components of a system, the analysis of degree of freedom can work better. If the degree of freedom is zero then the problem is specified.

The degree of freedom is explained as:

F=m−n−p−s

Where, m is total number of independent stream variables, n is number of independent balances, p is total number of specified terms and s is total number of subsidiary relation.

Answer 12

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Ch. 4 - Prob. 4.1P Ch. 4 - Rain is falling on a poorly designed 150-m" flat...Ch. 4 - A liquid-phase chemical reaction A -* B takes...Ch. 4 - A stream consisting of 44.6 mole% benzene and...Ch. 4 - Prob. 4.5P Ch. 4 - A liquid mixture of acetone and water contains 35...Ch. 4 - Prob. 4.7P Ch. 4 - Prob. 4.8P Ch. 4 - Inside a distillation column (see Problem 4.8), a...Ch. 4 - Prob. 4.10P

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