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: Consider the reaction shown here occurring at 25 ˚C:Cr(s) + Cd2+(aq) →  Cr2+(aq) + Cd(s)Complete the table.[Cd2+][Cr2+]QEcellΔGrxn1.001.001.001.00 x 10-51.0 x 10-51.004.18x10-41.00Note: Cr(s)  →  Cr2+

Problem

Consider the reaction shown here occurring at 25 ˚C:

Cr(s) + Cd2+(aq) →  Cr2+(aq) + Cd(s)

Complete the table.

[Cd2+][Cr2+]QEcellΔGrxn
1.001.00


1.001.00 x 10-5



1.0 x 10-5


1.00



4.18x10-4


1.00


Note: Cr(s)  →  Cr2+(aq) + 2 e-, Ered = –0.91 V
Determine the value of E˚cell of the reaction.