Chemistry: An Atoms-Focused Approach (Second Edition)
Chemistry: An Atoms-Focused Approach (Second Edition)
2nd Edition
ISBN: 9780393614053
Author: Thomas R. Gilbert, Rein V. Kirss, Stacey Lowery Bretz, Natalie Foster
Publisher: W. W. Norton & Company
Question
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Chapter 18, Problem 18.101QA
Interpretation Introduction

To:

Balance the given reaction and determine whether it is a redox reaction or not

Expert Solution & Answer
Check Mark

Answer to Problem 18.101QA

Solution:

2 KAlSi3O8s+2 H2Ol+CO2gAl2Si2O5OH4s+4 SiO2s+K2CO3aq

This reaction is not a redox reaction.

Explanation of Solution

1) Concept:

The reaction is balanced by taking an inventory of the atoms on both sides of the reaction. The K, Al, C and S are balanced first by adding appropriate coefficients. The O and H atomsare balanced at the end.

If the reaction involves oxidation and reduction of the species involved, then the reaction is a redox reaction. This can be determined by calculating the oxidation numbers of the elements on the left side and right side of the reaction.

2) Given:

The unbalanced reaction is

KAlSi3O8s+H2Ol+CO2gAl2Si2O5OH4s+SiO2s+K2CO3aq

3) Calculations:

KAlSi3O8s+H2Ol+CO2gAl2Si2O5OH4s+SiO2s+K2CO3aq

Taking an inventory of atoms, we get

1K+1 Al+3 Si+11O+2H+1 C2K+2 Al+3Si+14 O+4H+1 C

To balance the K and Al,  we add a coefficient 2 in front of KAlSi3O8s

2 KAlSi3O8s+H2Ol+CO2gAl2Si2O5OH4s+SiO2s+K2CO3aq

Taking an inventory of atoms, we get

2K+2 Al+6 Si+19O+2H+1 C2K+2 Al+3Si+14 O+4H+1 C

To balance the Si, we add a coefficient 4 in front of SiO2s

2 KAlSi3O8s+H2Ol+CO2gAl2Si2O5OH4s+4 SiO2s+K2CO3aq

Taking an inventory of atoms, we get

2K+2 Al+6 Si+19O+2H+1 C2K+2 Al+6Si+20 O+4H+1 C

To balance the H, we add a coefficient 2 in front of H2O l

2 KAlSi3O8s+2 H2Ol+CO2gAl2Si2O5OH4s+4 SiO2s+K2CO3aq

Taking an inventory of atoms, we get

2K+2 Al+6 Si+20O+4H+1 C2K+2 Al+6Si+20 O+4H+1 C

The reaction is now completely balanced.

The final balanced reaction is

2 KAlSi3O8s+2 H2Ol+CO2gAl2Si2O5OH4s+4 SiO2s+K2CO3aq

The oxidation numbers of the elements in the compounds are as follows:

Compound Element Oxidation number
KAlSi3O8 Si +4
SiO2 Si +4
CO2 C +4
K2CO3 C +4

It is seen that the oxidation number of the elements do not change.

Thus, this is not a redox reaction.

Conclusion:

The reaction is balanced by inspection and by taking an inventory of the atoms. The oxidation numbers of the elements do not change; hence, it is a not a redox reaction.

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Chapter 18 Solutions

Chemistry: An Atoms-Focused Approach (Second Edition)

Ch. 18 - Prob. 18.11VPCh. 18 - Prob. 18.12VPCh. 18 - Prob. 18.13VPCh. 18 - Prob. 18.14VPCh. 18 - Prob. 18.15VPCh. 18 - Prob. 18.16VPCh. 18 - Prob. 18.17VPCh. 18 - Prob. 18.18VPCh. 18 - Prob. 18.19QACh. 18 - Prob. 18.20QACh. 18 - Prob. 18.21QACh. 18 - Prob. 18.22QACh. 18 - Prob. 18.23QACh. 18 - Prob. 18.24QACh. 18 - Prob. 18.25QACh. 18 - Prob. 18.26QACh. 18 - Prob. 18.27QACh. 18 - Prob. 18.28QACh. 18 - Prob. 18.29QACh. 18 - Prob. 18.30QACh. 18 - Prob. 18.31QACh. 18 - Prob. 18.32QACh. 18 - Prob. 18.33QACh. 18 - Prob. 18.34QACh. 18 - Prob. 18.35QACh. 18 - Prob. 18.36QACh. 18 - Prob. 18.37QACh. 18 - Prob. 18.38QACh. 18 - Prob. 18.39QACh. 18 - Prob. 18.40QACh. 18 - Prob. 18.41QACh. 18 - Prob. 18.42QACh. 18 - Prob. 18.43QACh. 18 - Prob. 18.44QACh. 18 - Prob. 18.45QACh. 18 - Prob. 18.46QACh. 18 - Prob. 18.47QACh. 18 - Prob. 18.48QACh. 18 - Prob. 18.49QACh. 18 - Prob. 18.50QACh. 18 - Prob. 18.51QACh. 18 - Prob. 18.52QACh. 18 - Prob. 18.53QACh. 18 - Prob. 18.54QACh. 18 - Prob. 18.55QACh. 18 - Prob. 18.56QACh. 18 - Prob. 18.57QACh. 18 - Prob. 18.58QACh. 18 - Prob. 18.59QACh. 18 - Prob. 18.60QACh. 18 - Prob. 18.61QACh. 18 - Prob. 18.62QACh. 18 - Prob. 18.63QACh. 18 - Prob. 18.64QACh. 18 - Prob. 18.65QACh. 18 - Prob. 18.66QACh. 18 - Prob. 18.67QACh. 18 - Prob. 18.68QACh. 18 - Prob. 18.69QACh. 18 - Prob. 18.70QACh. 18 - Prob. 18.71QACh. 18 - Prob. 18.72QACh. 18 - Prob. 18.73QACh. 18 - Prob. 18.74QACh. 18 - Prob. 18.75QACh. 18 - Prob. 18.76QACh. 18 - Prob. 18.77QACh. 18 - Prob. 18.78QACh. 18 - Prob. 18.79QACh. 18 - Prob. 18.80QACh. 18 - Prob. 18.81QACh. 18 - Prob. 18.82QACh. 18 - Prob. 18.83QACh. 18 - Prob. 18.84QACh. 18 - Prob. 18.85QACh. 18 - Prob. 18.86QACh. 18 - Prob. 18.87QACh. 18 - Prob. 18.88QACh. 18 - Prob. 18.89QACh. 18 - Prob. 18.90QACh. 18 - Prob. 18.91QACh. 18 - Prob. 18.92QACh. 18 - Prob. 18.93QACh. 18 - Prob. 18.94QACh. 18 - Prob. 18.95QACh. 18 - Prob. 18.96QACh. 18 - Prob. 18.97QACh. 18 - Prob. 18.98QACh. 18 - Prob. 18.99QACh. 18 - Prob. 18.100QACh. 18 - Prob. 18.101QACh. 18 - Prob. 18.102QACh. 18 - Prob. 18.103QACh. 18 - Prob. 18.104QACh. 18 - Prob. 18.105QACh. 18 - Prob. 18.106QACh. 18 - Prob. 18.107QACh. 18 - Prob. 18.108QACh. 18 - Prob. 18.109QACh. 18 - Prob. 18.110QACh. 18 - Prob. 18.111QACh. 18 - Prob. 18.112QACh. 18 - Prob. 18.113QACh. 18 - Prob. 18.114QACh. 18 - Prob. 18.115QACh. 18 - Prob. 18.116QACh. 18 - Prob. 18.117QACh. 18 - Prob. 18.118QACh. 18 - Prob. 18.119QACh. 18 - Prob. 18.120QACh. 18 - Prob. 18.121QACh. 18 - Prob. 18.122QACh. 18 - Prob. 18.123QACh. 18 - Prob. 18.124QACh. 18 - Prob. 18.125QACh. 18 - Prob. 18.126QACh. 18 - Prob. 18.127QACh. 18 - Prob. 18.128QACh. 18 - Prob. 18.129QACh. 18 - Prob. 18.130QACh. 18 - Prob. 18.131QACh. 18 - Prob. 18.132QA
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