General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343



General Chemistry - Standalone boo...

11th Edition
Steven D. Gammon + 7 others
ISBN: 9781305580343
Textbook Problem

Calculate the standard free-energy change at 25°C for the following reaction.

4 Al ( s ) + 3 O 2 ( g ) + 12 H + ( a q ) 4 Al 3 + ( a q ) + 6 H 2 O ( l )

Use standard electrode potentials.

Interpretation Introduction


The free energy change of given voltaic cell should be calculated by using standard reduction potentials.

Concept introduction:

Cell potential (EMF):

The maximum potential difference between two electrodes in the voltaic cell is known as cell potential.

If standard reduction potentials of electrodes are given the cell potential (EMF) is given by,



Ecathodeisthereductionhalfcell potentialEanodeistheoxidationhalfcell potential

Free energy change:

In thermodynamics the cell potential is known as  maximum work of the cell and it is equal to free energy change of the cell and it is given by,



ΔGisfreeenergychangenisnumberofelectrontransferredFisfaraday constantEcelliscell potential



4Al(s) + 3O2(g) + 12H+(aq)4Al3+(aq) + 6H2O(l)

The given voltaic cell is recorder as shown above.

To calculate the cell potential (EMF) of given cell

The standard reduction potentials of (SRQ) of half cell reactions are record from standard reduction potentials table and they are,

4Al(s) 4Al3+(aq) + 12e-SQR=-1.66 V3O2(g) + 12H+(aq) + 12e-6H2O(l)SQR=1.23V

The most positive SQR is considering as cathode potential.

The SQR of electrodes are plugged in the bellow equation to give cell potential of given voltaic cell.


Still sussing out bartleby?

Check out a sample textbook solution.

See a sample solution

The Solution to Your Study Problems

Bartleby provides explanations to thousands of textbook problems written by our experts, many with advanced degrees!

Get Started

Chapter 19 Solutions

Show all chapter solutions add
Sect-19.5 P-19.2CCSect-19.6 P-19.10ESect-19.6 P-19.11ESect-19.6 P-19.12ESect-19.7 P-19.13ESect-19.7 P-19.14ESect-19.7 P-19.3CCSect-19.8 P-19.4CCSect-19.9 P-19.15ESect-19.10 P-19.16ESect-19.11 P-19.17ESect-19.11 P-19.18ECh-19 P-19.1QPCh-19 P-19.2QPCh-19 P-19.3QPCh-19 P-19.4QPCh-19 P-19.5QPCh-19 P-19.6QPCh-19 P-19.7QPCh-19 P-19.8QPCh-19 P-19.9QPCh-19 P-19.10QPCh-19 P-19.11QPCh-19 P-19.12QPCh-19 P-19.13QPCh-19 P-19.14QPCh-19 P-19.15QPCh-19 P-19.16QPCh-19 P-19.17QPCh-19 P-19.18QPCh-19 P-19.19QPCh-19 P-19.20QPCh-19 P-19.21QPCh-19 P-19.22QPCh-19 P-19.23QPCh-19 P-19.24QPCh-19 P-19.25QPCh-19 P-19.26QPCh-19 P-19.27QPCh-19 P-19.28QPCh-19 P-19.29QPCh-19 P-19.30QPCh-19 P-19.31QPCh-19 P-19.32QPCh-19 P-19.33QPCh-19 P-19.34QPCh-19 P-19.35QPCh-19 P-19.36QPCh-19 P-19.37QPCh-19 P-19.38QPCh-19 P-19.39QPCh-19 P-19.40QPCh-19 P-19.41QPCh-19 P-19.42QPCh-19 P-19.43QPCh-19 P-19.44QPCh-19 P-19.45QPCh-19 P-19.46QPCh-19 P-19.47QPCh-19 P-19.48QPCh-19 P-19.49QPCh-19 P-19.50QPCh-19 P-19.51QPCh-19 P-19.52QPCh-19 P-19.53QPCh-19 P-19.54QPCh-19 P-19.55QPCh-19 P-19.56QPCh-19 P-19.57QPCh-19 P-19.58QPCh-19 P-19.59QPCh-19 P-19.60QPCh-19 P-19.61QPCh-19 P-19.62QPCh-19 P-19.63QPCh-19 P-19.64QPCh-19 P-19.65QPCh-19 P-19.66QPCh-19 P-19.67QPCh-19 P-19.68QPCh-19 P-19.69QPCh-19 P-19.70QPCh-19 P-19.71QPCh-19 P-19.72QPCh-19 P-19.73QPCh-19 P-19.74QPCh-19 P-19.75QPCh-19 P-19.76QPCh-19 P-19.77QPCh-19 P-19.78QPCh-19 P-19.79QPCh-19 P-19.80QPCh-19 P-19.81QPCh-19 P-19.82QPCh-19 P-19.83QPCh-19 P-19.84QPCh-19 P-19.85QPCh-19 P-19.86QPCh-19 P-19.87QPCh-19 P-19.88QPCh-19 P-19.89QPCh-19 P-19.90QPCh-19 P-19.91QPCh-19 P-19.92QPCh-19 P-19.93QPCh-19 P-19.94QPCh-19 P-19.95QPCh-19 P-19.96QPCh-19 P-19.97QPCh-19 P-19.98QPCh-19 P-19.99QPCh-19 P-19.100QPCh-19 P-19.101QPCh-19 P-19.102QPCh-19 P-19.103QPCh-19 P-19.104QPCh-19 P-19.105QPCh-19 P-19.106QPCh-19 P-19.107QPCh-19 P-19.108QPCh-19 P-19.109QPCh-19 P-19.110QPCh-19 P-19.111QPCh-19 P-19.112QPCh-19 P-19.113QPCh-19 P-19.114QPCh-19 P-19.115QPCh-19 P-19.116QPCh-19 P-19.117QPCh-19 P-19.118QPCh-19 P-19.119QPCh-19 P-19.120QPCh-19 P-19.121QPCh-19 P-19.122QPCh-19 P-19.123QPCh-19 P-19.124QPCh-19 P-19.125QPCh-19 P-19.126QPCh-19 P-19.127QPCh-19 P-19.128QPCh-19 P-19.129QPCh-19 P-19.130QPCh-19 P-19.131QPCh-19 P-19.132QPCh-19 P-19.133QPCh-19 P-19.134QPCh-19 P-19.135QPCh-19 P-19.136QPCh-19 P-19.137QPCh-19 P-19.138QPCh-19 P-19.139QPCh-19 P-19.140QPCh-19 P-19.141QPCh-19 P-19.142QPCh-19 P-19.143QPCh-19 P-19.144QPCh-19 P-19.145QPCh-19 P-19.146QPCh-19 P-19.147QPCh-19 P-19.148QPCh-19 P-19.149QPCh-19 P-19.150QPCh-19 P-19.151QPCh-19 P-19.152QPCh-19 P-19.153QPCh-19 P-19.154QP

Additional Science Solutions

Find more solutions based on key concepts

Show solutions add

Water from public water systems requires frequent borne testing for microorganisms. is less healthful than bott...

Nutrition: Concepts and Controversies - Standalone book (MindTap Course List)

25. Name each compound:

Chemistry In Focus

What are sister chromatids?

Human Heredity: Principles and Issues (MindTap Course List)

Did Ediacarans evolve before or after the Cambrian?

Biology: The Unity and Diversity of Life (MindTap Course List)