Ch.18 - ElectrochemistryWorksheetSee all chapters
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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: The value of E°cell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M?a. 1.01 V b. 1.19 V c. 0 V d. -1.01 V e. -1.19 V 

Solution: The value of E°cell for the reaction Zn(s) + Cu2+(aq) &lt;=&gt; Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M?a. 1.01 Vb. 1.19 Vc. 0 V

Problem

The value of E°cell for the reaction Zn(s) + Cu2+(aq) <=> Zn2+(aq) + Cu(s) is 1.10 V. What is the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M?

a. 1.01 V
b. 1.19 V
c. 0 V
d. -1.01 V
e. -1.19 V 

Solution

We are asked to calculate the value of E for a cell in which [Cu2+] = 1.0 x 10-3 M and [Zn2+] = 1.0 M

Zn(s) + Cu2+(aq) ⇌ Zn2+(aq) + Cu(s)      E°cell = 1.10 V


We will use the Nernst Equation to calculate the cell potential. The Nernst Equation relates the concentrations of compounds and cell potential.

 Ecell=E°cell-(0.0592 Vn) log Q

Ecell = cell potential under non-standard conditions
cell = standard cell potential
n = number of e- transferred
Q= reaction quotient = [products]/[reactants]


We're going to calculate the Ecell using the following steps:

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