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: The standard cell potential. E°, for this reaction is 0.79 V. 6 I- (aq) + Cr2O72- (aq) + 14H+ (aq) → 3 l2 (aq) + 2 Cr3+ (aq) + 7 H2O (l) What is the standard potential for l2 (aq) being reduced to l

Problem

The standard cell potential. E°, for this reaction is 0.79 V.

6 I(aq) + Cr2O72- (aq) + 14H(aq) → 3 l(aq) + 2 Cr3+ (aq) + 7 H2O (l)

What is the standard potential for l(aq) being reduced to l- (aq) given that the standard reduction potential for Cr2O72- (aq) changing to Cr3+(aq) is +1.33 V?

(A) +0.54 V

(B) -0.54 V

(C) +0.18 V

(D) -0.18 V