ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS
4th Edition
ISBN: 9781119330745
Author: FELDER
Publisher: WILEY
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Chapter 6, Problem 6.67P
Interpretation Introduction

(a)

Interpretation:

The molar flowrates and mole fractions of the hexane in both the streams, liquid as well gas leaving the column are to be determined. Also, the average molar flow rates of gas and liquid streams in the column are to be calculated.

Concept introduction:

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

Average value is calculated as

Average=iNxiN

Interpretation Introduction

(b)

Interpretation:

The mole fraction of hexane in the gas leaving the stage yN and in the liquid entering it xN1 are to be calculated at given conditions for the given process.

Concept introduction:

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

Antoine equation is used to determine the vapor pressure of any substance at the given temperature by the equation:

logP(mmHg)=AB(TC)+C ...... (3)

Here, A, B and C are the constants specific for a substance given in table B.4 of appendix B.

For two phase binary mixture, Raoult’s law states that,

xAPA=yAPxBPB=yBP ...... (4)

Here, xA and xB are the mole fractions of A and B in liquid phase respectively, PA and PB are the vapor pressure of A and B respectively, yA and yB are the mole fractions of A and B respectively and P is the total pressure of the system.

Interpretation Introduction

(c)

Interpretation:

The given equations are to be derived for the given conditions.

Concept introduction:

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

Antoine equation is used to determine the vapor pressure of any substance at the given temperature by the equation:

logP(mmHg)=AB(TC)+C ...... (3)

Here, A, B and C are the constants specific for a substance given in table B.4 of appendix B.

For two phase binary mixture, Raoult’s law states that,

xAPA=yAPxBPB=yBP ...... (4)

Here, xA and xB are the mole fractions of A and B in liquid phase respectively, PA and PB are the vapor pressure of A and B respectively, yA and yB are the mole fractions of A and B respectively and P is the total pressure of the system.

Interpretation Introduction

(d)

Interpretation:

The effect of operating temperature on the given absorption column is to be examined by estimating the number of ideal stages which are necessary to obtain the desired separation.

Concept introduction:

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

Antoine equation is used to determine the vapor pressure of any substance at the given temperature by the equation:

logP(mmHg)=AB(TC)+C ...... (3)

Here, A, B and C are the constants specific for a substance given in table B.4 of appendix B.

For two phase binary mixture, Raoult’s law states that,

xAPA=yAPxBPB=yBP ...... (4)

Here, xA and xB are the mole fractions of A and B in liquid phase respectively, PA and PB are the vapor pressure of A and B respectively, yA and yB are the mole fractions of A and B respectively and P is the total pressure of the system.

Interpretation Introduction

(e)

Interpretation:

The maximum temperature at which the separation can be achieved for the given absorption column is to be calculated.

Concept introduction:

In a system, a conserved quantity (total mass, mass of a species, energy or momentum) is balanced and can be written as

input+generationoutputconsumpumtion=accumulation

Here, ‘input’ is the stream which enters the system. ‘generation’ is the term used for the quantity that is produced within the system. ‘output’ is the stream which leaves the system. ‘consumption’ is the term used for the quantity that is consumed within the system. ‘accumulation’ is used for the quantity which is builds up within the system.

All the equations which are formed are then solved simultaneously to calculate the values of the unknown variables.

Antoine equation is used to determine the vapor pressure of any substance at the given temperature by the equation:

logP(mmHg)=AB(TC)+C ...... (3)

Here, A, B and C are the constants specific for a substance given in table B.4 of appendix B.

For two phase binary mixture, Raoult’s law states that,

xAPA=yAPxBPB=yBP ...... (4)

Here, xA and xB are the mole fractions of A and B in liquid phase respectively, PA and PB are the vapor pressure of A and B respectively, yA and yB are the mole fractions of A and B respectively and P is the total pressure of the system.

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Chapter 6 Solutions

ELEM.PRIN.OF CHEMICAL PROC.-W/ACCESS

Ch. 6 - Prob. 6.11PCh. 6 - Prob. 6.12PCh. 6 - Prob. 6.13PCh. 6 - Air at 50% relative humidity is cooled...Ch. 6 - Prob. 6.15PCh. 6 - Prob. 6.16PCh. 6 - Air at 90°C and 1.00 atm (absolute) contains 10.0...Ch. 6 - When fermentation units are operated with high...Ch. 6 - When you step out of a shower, the temperature in...Ch. 6 - A fuel cell is an electrochemical device in which...Ch. 6 - Prob. 6.21PCh. 6 - Prob. 6.22PCh. 6 - Prob. 6.23PCh. 6 - Prob. 6.24PCh. 6 - Prob. 6.25PCh. 6 - Prob. 6.26PCh. 6 - Prob. 6.27PCh. 6 - Prob. 6.28PCh. 6 - An air conditioner is designed to bring 10.000...Ch. 6 - Prob. 6.30PCh. 6 - Prob. 6.31PCh. 6 - Prob. 6.32PCh. 6 - A gas stream containing 40.0 mole% hydrogen, 35.0%...Ch. 6 - Prob. 6.34PCh. 6 - In the manufacture of an active pharmaceutical...Ch. 6 - Prob. 6.36PCh. 6 - In the ?nal stage of the manufacturing process...Ch. 6 - Prob. 6.38PCh. 6 - A fuel gas containing methane and ethane is burned...Ch. 6 - A mixture of propane and butane is burned with...Ch. 6 - An important parameter in the design of gas...Ch. 6 - A liquid stream consisting of 12.5 mole% n-butane...Ch. 6 - Nitric acid is a chemical intermediate primarily...Ch. 6 - Prob. 6.44PCh. 6 - Sulfur trioxide (SO3) dissolves in and reacts with...Ch. 6 - State whether you would use Raoult’s law or Henrys...Ch. 6 - A gas containing nitrogen, benzene, and toluene is...Ch. 6 - Prob. 6.48PCh. 6 - Prob. 6.49PCh. 6 - A conelation for methane solubility in...Ch. 6 - Prob. 6.51PCh. 6 - The constituent partial pressures of a gas in...Ch. 6 - Prob. 6.53PCh. 6 - Prob. 6.54PCh. 6 - Prob. 6.55PCh. 6 - Prob. 6.56PCh. 6 - Prob. 6.57PCh. 6 - Prob. 6.58PCh. 6 - Nitrogen is bubbled through a liquid mixture that...Ch. 6 - Prob. 6.60PCh. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - The feed to a distillation column (sketched below)...Ch. 6 - Prob. 6.64PCh. 6 - Prob. 6.65PCh. 6 - Prob. 6.66PCh. 6 - Prob. 6.67PCh. 6 - Prob. 6.68PCh. 6 - Prob. 6.69PCh. 6 - Prob. 6.70PCh. 6 - A methanol-water feed stream is introduced to a...Ch. 6 - Prob. 6.72PCh. 6 - In this problem you will use a spreadsheet to...Ch. 6 - Prob. 6.74PCh. 6 - Prob. 6.75PCh. 6 - Prob. 6.76PCh. 6 - Acetaldehyde is synthesized by the catalytic...Ch. 6 - Dehydration of natural gas is necessary to prevent...Ch. 6 - A two-unit process is used to separate H2S from a...Ch. 6 - Prob. 6.80PCh. 6 - Prob. 6.81PCh. 6 - Prob. 6.82PCh. 6 - Prob. 6.83PCh. 6 - A solution containing 100 lbm KNO3/100 Ibm H2O at...Ch. 6 - A 10.0 wt% aqueous solution of sodium chloride is...Ch. 6 - Potassium dichromate (K2Cr2O7) is to be recovered...Ch. 6 - Prob. 6.87PCh. 6 - Prob. 6.88PCh. 6 - Sodium bicarbonate is synthesized by reacting...Ch. 6 - An ore containing 90 wt% MgSO4(H2O and the balance...Ch. 6 - An aqueous waste stream leaving a process contains...Ch. 6 - A solution of diphenyl (MW = 154.2) in benzene is...Ch. 6 - An aqueous solution of urea (MW = 60.06) freezes...Ch. 6 - Prob. 6.94PCh. 6 - Derive Equation 6.54 for the boiling-point...Ch. 6 - Prob. 6.96PCh. 6 - A stream of 5.00 wt% oleic acid in cottonseed oil...Ch. 6 - Benzene and hexane are being considered as...Ch. 6 - Acetone is lo be extracted with n-hexane from a...Ch. 6 - Prob. 6.100PCh. 6 - Prob. 6.101PCh. 6 - Five kilograms of a 30 wt% acetone70% water...Ch. 6 - An aqueous acetone solution is fed at a rate of...Ch. 6 - Prob. 6.104PCh. 6 - Prob. 6.105PCh. 6 - Air at 25°C and 1 atm with a relative humidity of...Ch. 6 - Prob. 6.107PCh. 6 - Prob. 6.108PCh. 6 - Various amounts of activated carbon were added to...
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