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 following electrochemical cell for the following questions.Fe | FeBr2 (aq. 0.010 M) || KBr (aq, 1.0 M, Br2 (l) | PtWhat is the overall reaction occurring in the cell when current flows?a)

Problem

Consider the following electrochemical cell for the following questions.

Fe | FeBr2 (aq. 0.010 M) || KBr (aq, 1.0 M, Br2 (l) | Pt

What is the overall reaction occurring in the cell when current flows?

a) Fe(s) + FeBr2(aq) → KBr(aq) + Br2(l)

b) Fe(s) + Br2(l) → FeBr2(aq)

c) 2 FeBr2(aq) + Br2(l) → 2 FeBr3(aq)

d) 2 FeBr3(aq) → 2 FeBr2(aq) + Br2(l)

e) FeBr2(aq) → Fe(s) + Br2(l)

 

What is ΔG° of the overall reaction taking place in the cell when current flows?

a) 297 kJ

b) -297 kJ

c) 149 kJ

d) -149 kJ

e) 61.8 kJ

f) -61.8 kJ