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: Assume that you want to construct a voltaic cell that uses the following half reactions:A2 +  ( aq ) + 2e-  →  A( s )Eredo= -0.13VB2 +  ( aq ) + 2e-  →  B( s )Eredo= -1.12VYou begin with the incomplet

Problem
Assume that you want to construct a voltaic cell that uses the following half reactions:
A2 +  ( aq ) + 2e-  →  A( s )Eredo= -0.13V
B2 +  ( aq ) + 2e-  →  B( s )Eredo= -1.12V



You begin with the incomplete cell pictured below, in which the electrodes are immersed in water.
A diagram shows a voltmeter attached to two electrodes, A and B.  Each electrode is in a beaker filled with water.

Which direction do electrons move through the external circuit?