Ch.18 - ElectrochemistrySee 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: Which of these changes will produce the most positive voltage for this half reaction in the direction written? Co2+ (aq) + 2e– → Co(s)      E° = –0.28 V a) increasing the amount of solid Co b) decreasing the amount of solid Co c) increasing the concentration of Co2+ d) decreasing the concentration of Co2+    

Problem

Which of these changes will produce the most positive voltage for this half reaction in the direction written?

Co2+ (aq) + 2e → Co(s)      E° = –0.28 V

a) increasing the amount of solid Co

b) decreasing the amount of solid Co

c) increasing the concentration of Co2+

d) decreasing the concentration of Co2+