Chemistry: An Atoms-Focused Approach
Chemistry: An Atoms-Focused Approach
14th Edition
ISBN: 9780393912340
Author: Thomas R. Gilbert, Rein V. Kirss, Natalie Foster
Publisher: W. W. Norton & Company
Question
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Chapter 20, Problem 20.53QA
Interpretation Introduction

To calculate:

The change in the free energy of the hydrolysis reaction of the maltose to glucose.

Expert Solution & Answer
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Answer to Problem 20.53QA

Solution:

The change in free energy of the hydrolysis reaction of maltose to glucose is -16.4 kJ.

Explanation of Solution

1) Concept:

The change in the free energy of the reaction is calculated from the standard molar free energy of products and reactant as

Grxno=nproductGf,   producto-nreactantGf,   reactanto

2) Formula:

Grxno=nproductGf,   producto-nreactantGf,   reactanto

3) Given:

i) Gf,   maltoseo=-2246.6 kJ/mol

ii) Gf,   glucoseo=-1274.4 kJ/mol

iii) Gf,   watero=-285.8 kJ/mol

iv) Maltose+H2O2 Glucose

4) Calculation:

Plug in the values and calculate the free energy change for the hydrolysis of maltose to glucose,

Grxno=nproductGf,   producto-nreactantGf,   reactanto

Grxno=[nglucose×Gf,   glucoseo]-nmaltose×Gf,   maltoseo+ nwater×Gf,   watero

Grxno=2 mol -1274.4 kJmol-1 mol -2246.6 kJmol+1 mol -285.8 kJmol

Grxno=-2548.8 kJ+2532.4 kJ

Grxno=-16.4 kJ

The change in the free energy of the hydrolysis reaction of maltose to glucose is -16.4 kJ.

Conclusion:

We used the free energy change formula related to the standard molar free energy for the products and reactants.

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Chapter 20 Solutions

Chemistry: An Atoms-Focused Approach

Ch. 20 - Prob. 20.12QACh. 20 - Prob. 20.13QACh. 20 - Prob. 20.14QACh. 20 - Prob. 20.15QACh. 20 - Prob. 20.16QACh. 20 - Prob. 20.17QACh. 20 - Prob. 20.18QACh. 20 - Prob. 20.19QACh. 20 - Prob. 20.20QACh. 20 - Prob. 20.21QACh. 20 - Prob. 20.22QACh. 20 - Prob. 20.23QACh. 20 - Prob. 20.24QACh. 20 - Prob. 20.25QACh. 20 - Prob. 20.26QACh. 20 - Prob. 20.27QACh. 20 - Prob. 20.28QACh. 20 - Prob. 20.29QACh. 20 - Prob. 20.30QACh. 20 - Prob. 20.31QACh. 20 - Prob. 20.32QACh. 20 - Prob. 20.33QACh. 20 - Prob. 20.34QACh. 20 - Prob. 20.35QACh. 20 - Prob. 20.36QACh. 20 - Prob. 20.37QACh. 20 - Prob. 20.38QACh. 20 - Prob. 20.39QACh. 20 - Prob. 20.40QACh. 20 - Prob. 20.41QACh. 20 - Prob. 20.42QACh. 20 - Prob. 20.43QACh. 20 - Prob. 20.44QACh. 20 - Prob. 20.45QACh. 20 - Prob. 20.46QACh. 20 - Prob. 20.47QACh. 20 - Prob. 20.48QACh. 20 - Prob. 20.49QACh. 20 - Prob. 20.50QACh. 20 - Prob. 20.51QACh. 20 - Prob. 20.52QACh. 20 - Prob. 20.53QACh. 20 - Prob. 20.54QACh. 20 - Prob. 20.55QACh. 20 - Prob. 20.56QACh. 20 - Prob. 20.57QACh. 20 - Prob. 20.58QACh. 20 - Prob. 20.59QACh. 20 - Prob. 20.60QACh. 20 - Prob. 20.61QACh. 20 - Prob. 20.62QACh. 20 - Prob. 20.63QACh. 20 - Prob. 20.64QACh. 20 - Prob. 20.65QACh. 20 - Prob. 20.66QACh. 20 - Prob. 20.67QACh. 20 - Prob. 20.68QACh. 20 - Prob. 20.69QACh. 20 - Prob. 20.70QACh. 20 - Prob. 20.71QACh. 20 - Prob. 20.72QACh. 20 - Prob. 20.73QACh. 20 - Prob. 20.74QACh. 20 - Prob. 20.75QACh. 20 - Prob. 20.76QACh. 20 - Prob. 20.77QACh. 20 - Prob. 20.78QACh. 20 - Prob. 20.79QACh. 20 - Prob. 20.80QACh. 20 - Prob. 20.81QACh. 20 - Prob. 20.82QACh. 20 - Prob. 20.83QACh. 20 - Prob. 20.84QA
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