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 standard cell potential of a Al/Al 3+ | Cd/Cd2+ voltaic cell.  Al3+ (aq) + 3e– → Al(s)      E ̊red = –1.66 V Cd2+ (aq) + 2e– → Cd(s)    E ̊red = –0.403V a) –2.11 V; nonspontaneous b)

Problem

Calculate the standard cell potential of a Al/Al 3+ | Cd/Cd2+ voltaic cell. 

Al3+ (aq) + 3e → Al(s)      E ̊red = –1.66 V

Cd2+ (aq) + 2e → Cd(s)    E ̊red = –0.403V

a) –2.11 V; nonspontaneous

b) 2.11 V; spontaneous

c) 1.26 V; spontaneous

d) –1.26 V; nonspontaneous

e) 1.257 V; non‐spontaneous