Chemistry: An Atoms-Focused Approach
Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393600681
Author: Gilbert
Publisher: W. W. Norton & Company
Question
Book Icon
Chapter 7, Problem 7.79QA
Interpretation Introduction

To find:

a) The efficiency of scrubbers in capturing SO2.

b) How many metric tons of SO2 escapes from antipollution scrubbers installed in the smokestacks of the power plant.

Expert Solution & Answer
Check Mark

Answer to Problem 7.79QA

Solution:

a) The efficiency of scrubbers in capturing SO2 is 87 %.

b) 0.60 metric tons of SO2 is escaped from antipollution scrubbers installed in the smokestacks of the power plant.

Explanation of Solution

1) Concept:

a) We are given mass of coal and the percentage of S present in it. So first we have to find mass of S present. After the combustion S gets converted into SO2, we have to find the mass of SO2 that is formed from combustion of S. The reaction of combustion of S is

S (s)+O2 (g)SO2 (g)

To calculate the mass of SO2 form mass of S we have to convert 2.25 metric tons to grams then into moles of S. Using molar ratios of S and SO2 we can find the mass of SO2 in grams and then convert it to metric tons. We can consider this as theoretical yield or total mass of  SO2 formed in the reaction.

We are given mass of SO2 captured by the scrubbers. Using mass of SO2 capctured by scrubbers and total mass of SO2 produced, the efficiency can be calculated.

b) Then we can find the mass of SO2 escaped from the total mass of SO2  formed and mass of SO2 captured by the scrubbers.

2) Formula:

Efficiency=mass of SO2 captured by scrubbersTotal mass of SO2 produced×100

3) Given information:

We are given mass of coal =75 metric tons, containing 3.0% S by mass. Also we are given mass of SO2=3.9 metric tons captured by the scrubbers.

4) Calculations:

a) To Calculate the efficiency of scrubbers in capturing SO2.

The mass of S present would be,

mass of S=75 metric ton×3.0100=2.25 metric tons

Now the reaction of combustion of S is

S (s)+O2 (g)SO2 (g)

Mass of SO2 (g) formed would be

2.25 metric tons S×1×106 g S1 metric ton =2.25 × 106 g S

2.25 × 106 g S×1 mol S32.065 g S×1 mole SO2 1 mole S×64.064 g SO21 mole SO2×1 metric ton SO2(1×106g SO2)

=4.5 metric tons SO2

Now the efficiency of scrubbers in capturing SO2

Efficiency=mass of SO2 captured by scrubbersTotal mass of SO2 produced×100

Efficiency=3.9 metric tons 4.5 metric tons ×100

Efficiency=0.8666×100

Efficiency=87 %

The efficiency of scrubbers in capturing SO2 is 87 %.

b) The mass of SO2 escaped

 =Total mass of SO2 produced-mass of SO2 captured by scrubbers

=4.5 metric tons -3.9 metric tons 

=0.60 metrictons SO2 escaped from the scrubbers

0.60 metric tons of SO2 is escaped from antipollution scrubbers installed in the smokestacks of the power plant.

Conclusion:

Using given mass and reaction stoichiometry, the mass of SO2 escaped is calculated. Using the capacity of scrubber in capturing SO2 and SO2 escaped, the efficiency can be calculated.

Want to see more full solutions like this?

Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Chapter 7 Solutions

Chemistry: An Atoms-Focused Approach

Ch. 7 - Prob. 7.11QACh. 7 - Prob. 7.12QACh. 7 - Prob. 7.13QACh. 7 - Prob. 7.14QACh. 7 - Prob. 7.15QACh. 7 - Prob. 7.16QACh. 7 - Prob. 7.17QACh. 7 - Prob. 7.18QACh. 7 - Prob. 7.19QACh. 7 - Prob. 7.20QACh. 7 - Prob. 7.21QACh. 7 - Prob. 7.22QACh. 7 - Prob. 7.23QACh. 7 - Prob. 7.24QACh. 7 - Prob. 7.25QACh. 7 - Prob. 7.26QACh. 7 - Prob. 7.27QACh. 7 - Prob. 7.28QACh. 7 - Prob. 7.29QACh. 7 - Prob. 7.30QACh. 7 - Prob. 7.31QACh. 7 - Prob. 7.32QACh. 7 - Prob. 7.33QACh. 7 - Prob. 7.35QACh. 7 - Prob. 7.36QACh. 7 - Prob. 7.37QACh. 7 - Prob. 7.38QACh. 7 - Prob. 7.39QACh. 7 - Prob. 7.40QACh. 7 - Prob. 7.41QACh. 7 - Prob. 7.42QACh. 7 - Prob. 7.43QACh. 7 - Prob. 7.44QACh. 7 - Prob. 7.45QACh. 7 - Prob. 7.46QACh. 7 - Prob. 7.47QACh. 7 - Prob. 7.48QACh. 7 - Prob. 7.49QACh. 7 - Prob. 7.50QACh. 7 - Prob. 7.51QACh. 7 - Prob. 7.52QACh. 7 - Prob. 7.53QACh. 7 - Prob. 7.54QACh. 7 - Prob. 7.55QACh. 7 - Prob. 7.56QACh. 7 - Prob. 7.57QACh. 7 - Prob. 7.58QACh. 7 - Prob. 7.59QACh. 7 - Prob. 7.60QACh. 7 - Prob. 7.61QACh. 7 - Prob. 7.62QACh. 7 - Prob. 7.63QACh. 7 - Prob. 7.64QACh. 7 - Prob. 7.65QACh. 7 - Prob. 7.66QACh. 7 - Prob. 7.67QACh. 7 - Prob. 7.68QACh. 7 - Prob. 7.69QACh. 7 - Prob. 7.70QACh. 7 - Prob. 7.71QACh. 7 - Prob. 7.72QACh. 7 - Prob. 7.73QACh. 7 - Prob. 7.74QACh. 7 - Prob. 7.75QACh. 7 - Prob. 7.76QACh. 7 - Prob. 7.77QACh. 7 - Prob. 7.78QACh. 7 - Prob. 7.79QACh. 7 - Prob. 7.80QACh. 7 - Prob. 7.81QACh. 7 - Prob. 7.82QACh. 7 - Prob. 7.83QACh. 7 - Prob. 7.84QACh. 7 - Prob. 7.85QACh. 7 - Prob. 7.86QACh. 7 - Prob. 7.87QACh. 7 - Prob. 7.88QACh. 7 - Prob. 7.89QACh. 7 - Prob. 7.90QACh. 7 - Prob. 7.91QACh. 7 - Prob. 7.92QACh. 7 - Prob. 7.93QACh. 7 - Prob. 7.94QACh. 7 - Prob. 7.95QACh. 7 - Prob. 7.96QACh. 7 - Prob. 7.97QACh. 7 - Prob. 7.98QACh. 7 - Prob. 7.99QACh. 7 - Prob. 7.100QACh. 7 - Prob. 7.101QACh. 7 - Prob. 7.102QACh. 7 - Prob. 7.103QACh. 7 - Prob. 7.104QACh. 7 - Prob. 7.105QACh. 7 - Prob. 7.106QACh. 7 - Prob. 7.107QACh. 7 - Prob. 7.108QACh. 7 - Prob. 7.109QACh. 7 - Prob. 7.110QA
Knowledge Booster
Background pattern image
Recommended textbooks for you
Text book image
Chemistry
Chemistry
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Cengage Learning
Text book image
Chemistry
Chemistry
ISBN:9781259911156
Author:Raymond Chang Dr., Jason Overby Professor
Publisher:McGraw-Hill Education
Text book image
Principles of Instrumental Analysis
Chemistry
ISBN:9781305577213
Author:Douglas A. Skoog, F. James Holler, Stanley R. Crouch
Publisher:Cengage Learning
Text book image
Organic Chemistry
Chemistry
ISBN:9780078021558
Author:Janice Gorzynski Smith Dr.
Publisher:McGraw-Hill Education
Text book image
Chemistry: Principles and Reactions
Chemistry
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:Cengage Learning
Text book image
Elementary Principles of Chemical Processes, Bind...
Chemistry
ISBN:9781118431221
Author:Richard M. Felder, Ronald W. Rousseau, Lisa G. Bullard
Publisher:WILEY