Ch.18 - ElectrochemistryWorksheetSee all chapters
All Chapters
Ch.1 - Intro to General Chemistry
Ch.2 - Atoms & Elements
Ch.3 - Chemical Reactions
BONUS: Lab Techniques and Procedures
BONUS: Mathematical Operations and Functions
Ch.4 - Chemical Quantities & Aqueous Reactions
Ch.5 - Gases
Ch.6 - Thermochemistry
Ch.7 - Quantum Mechanics
Ch.8 - Periodic Properties of the Elements
Ch.9 - Bonding & Molecular Structure
Ch.10 - Molecular Shapes & Valence Bond Theory
Ch.11 - Liquids, Solids & Intermolecular Forces
Ch.12 - Solutions
Ch.13 - Chemical Kinetics
Ch.14 - Chemical Equilibrium
Ch.15 - Acid and Base Equilibrium
Ch.16 - Aqueous Equilibrium
Ch. 17 - Chemical Thermodynamics
Ch.18 - Electrochemistry
Ch.19 - Nuclear Chemistry
Ch.20 - Organic Chemistry
Ch.22 - Chemistry of the Nonmetals
Ch.23 - Transition Metals and Coordination Compounds

Solution: Calculate the maximum electrical work that can be produced by this cell. 3 Co 2+ (aq) + 2 Cr (s) 2 Cr 3+ (aq) + 3 Co (s) Given the following reduction potentials: Cr 3+ + 3 e –      →       Cr    

Problem

Calculate the maximum electrical work that can be produced by this cell.

3 Co 2+ (aq) + 2 Cr (s) 2 Cr 3+ (aq) + 3 Co (s)

Given the following reduction potentials:

Cr 3+ + 3 e –      →       Cr                      E ° = - 0.74 Volts 

Co 2+ (aq) + 2 e –       →       Co            E ° = - 0.28 Volts 

Faraday’s constant = 96,500 Coulombs / mole of electrons

a) – 800 kJ      b) – 150 kJ      c) – 266 kJ      d) + 266 kJ