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: a. Label the anode and the cathode. Indicate the direction of electron flow. Label the terminals on the battery as positive or negative.b. Indicate the half-reaction occurring at Anode. Express your a

Solution: a. Label the anode and the cathode. Indicate the direction of electron flow. Label the terminals on the battery as positive or negative.b. Indicate the half-reaction occurring at Anode. Express your a

Problem

a. Label the anode and the cathode. Indicate the direction of electron flow. Label the terminals on the battery as positive or negative.

b. Indicate the half-reaction occurring at Anode. Express your answer as a chemical equation. Identify all of the phases in your answer.

c. Indicate the half-reaction occurring at Cathode. Express your answer as a chemical equation. Identify all of the phases in your answer.

d. Calculate the minimum voltage necessary to drive the reaction. Express your answer using two significant figures.

Solution

We’re given the following electrochemical cell:



Since a battery is given, this is an electrolytic cell, where a nonspontaneous process is occurring. Since the process is nonspontaneous, an outside energy source (battery) provides energy for it to occur.


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