Homework Help is Here – Start Your Trial Now!
Engineering
Chemical Engineering
2) Ammonia (NH3) is an important base, particularly in wastewaters. Consider a solution that contains a total of 10-3 M of ammonia in water. NH4+ = NH3 + H+ KA=10-9.3 a) Use the equilibrium expression and concept of mass balance to write an expression for each of the following species: log [NH4*] and log [NH3]. b) Prepare a log C-pH diagram for the solution described above. Label each line on your graph with the name of the chemical species it represents. [Notes: Your diagram should contain 4 lines, one for each of the four species in the system. You may draw your diagram by hand or using Excel or other software.] c) Use your diagram to find the equilibrium pH of the solution. Use a circle or “X” to mark your answer point on the diagram. d) Now consider a new solution made by adding 10-3 M of NH4Cl to water. Write the charge balance or proton condition for this solution. Use your diagram to determine the equilibrium pH of this solution. e) Suppose it is winter and your water temperature is 4°C. Recalculate the equilibrium constant at 4°C as well as your solution to (b) and (c).

2) Ammonia (NH3) is an important base, particularly in wastewaters. Consider a solution that contains a total of 10-3 M of ammonia in water. NH4+ = NH3 + H+ KA=10-9.3 a) Use the equilibrium expression and concept of mass balance to write an expression for each of the following species: log [NH4*] and log [NH3]. b) Prepare a log C-pH diagram for the solution described above. Label each line on your graph with the name of the chemical species it represents. [Notes: Your diagram should contain 4 lines, one for each of the four species in the system. You may draw your diagram by hand or using Excel or other software.] c) Use your diagram to find the equilibrium pH of the solution. Use a circle or “X” to mark your answer point on the diagram. d) Now consider a new solution made by adding 10-3 M of NH4Cl to water. Write the charge balance or proton condition for this solution. Use your diagram to determine the equilibrium pH of this solution. e) Suppose it is winter and your water temperature is 4°C. Recalculate the equilibrium constant at 4°C as well as your solution to (b) and (c).

Introduction to Chemical Engineering Thermodynamics
Introduction to Chemical Engineering Thermodynamics
8th Edition
ISBN:9781259696527
Author:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Chapter1: Introduction
Section: Chapter Questions
Problem 1.1P
See similar textbooks
icon
Related questions
Question
2) Ammonia (NH3) is an important base, particularly in wastewaters. Consider a solution that contains a total of 10-3 M of ammonia in water. NH4+ = NH3 + H+ KA=10-9.3 a) Use the equilibrium expression and concept of mass balance to write an expression for each of the following species: log [NH4*] and log [NH3]. b) Prepare a log C-pH diagram for the solution described above. Label each line on your graph with the name of the chemical species it represents. [Notes: Your diagram should contain 4 lines, one for each of the four species in the system. You may draw your diagram by hand or using Excel or other software.] c) Use your diagram to find the equilibrium pH of the solution. Use a circle or “X” to mark your answer point on the diagram. d) Now consider a new solution made by adding 10-3 M of NH4Cl to water. Write the charge balance or proton condition for this solution. Use your diagram to determine the equilibrium pH of this solution. e) Suppose it is winter and your water temperature is 4°C. Recalculate the equilibrium constant at 4°C as well as your solution to (b) and (c).
Transcribed Image Text:2) Ammonia (NH3) is an important base, particularly in wastewaters. Consider a solution that contains a total of 10-3 M of ammonia in water. NH4+ = NH3 + H+ KA=10-9.3 a) Use the equilibrium expression and concept of mass balance to write an expression for each of the following species: log [NH4*] and log [NH3]. b) Prepare a log C-pH diagram for the solution described above. Label each line on your graph with the name of the chemical species it represents. [Notes: Your diagram should contain 4 lines, one for each of the four species in the system. You may draw your diagram by hand or using Excel or other software.] c) Use your diagram to find the equilibrium pH of the solution. Use a circle or “X” to mark your answer point on the diagram. d) Now consider a new solution made by adding 10-3 M of NH4Cl to water. Write the charge balance or proton condition for this solution. Use your diagram to determine the equilibrium pH of this solution. e) Suppose it is winter and your water temperature is 4°C. Recalculate the equilibrium constant at 4°C as well as your solution to (b) and (c).
Expert Solution
steps

Step by step

Solved in 2 steps

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Recommended textbooks for you
Introduction to Chemical Engineering Thermodynami…
Introduction to Chemical Engineering Thermodynami…
Chemical Engineering
ISBN:
9781259696527
Author:
J.M. Smith Termodinamica en ingenieria quimica, Hendrick C Van Ness, Michael Abbott, Mark Swihart
Publisher:
McGraw-Hill Education
Elementary Principles of Chemical Processes, Bind…
Elementary Principles of Chemical Processes, Bind…
Chemical Engineering
ISBN:
9781118431221
Author:
Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:
WILEY
Elements of Chemical Reaction Engineering (5th Ed…
Elements of Chemical Reaction Engineering (5th Ed…
Chemical Engineering
ISBN:
9780133887518
Author:
H. Scott Fogler
Publisher:
Prentice Hall
Process Dynamics and Control, 4e
Process Dynamics and Control, 4e
Chemical Engineering
ISBN:
9781119285915
Author:
Seborg
Publisher:
WILEY
Industrial Plastics: Theory and Applications
Industrial Plastics: Theory and Applications
Chemical Engineering
ISBN:
9781285061238
Author:
Lokensgard, Erik
Publisher:
Delmar Cengage Learning
Unit Operations of Chemical Engineering
Unit Operations of Chemical Engineering
Chemical Engineering
ISBN:
9780072848236
Author:
Warren McCabe, Julian C. Smith, Peter Harriott
Publisher:
McGraw-Hill Companies, The
SEE MORE TEXTBOOKS