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: Which statement is true of all functioning voltaic cells?a) Both Ecell and ∆G are negativeb) Both Ecell and ∆G are positivec) Ecell is negative and ∆G is positived) Ecell is positive and ∆G is negativee) None of the above must be true

Solution: Which statement is true of all functioning voltaic cells?a) Both Ecell and ∆G are negativeb) Both Ecell and ∆G are positivec) Ecell is negative and ∆G is positived) Ecell is positive and ∆G is negativ

Problem

Which statement is true of all functioning voltaic cells?

a) Both Ecell and ∆G are negative

b) Both Ecell and ∆G are positive

c) Ecell is negative and ∆G is positive

d) Ecell is positive and ∆G is negative

e) None of the above must be true

Solution

We’re being asked to determine which of the given statements apply to a voltaic cell.


Recall that a voltaic or galvanic cell is an electrochemical cell that is spontaneous and produces electricity. On the other hand, an electrolytic cell is nonspontaneous.


Recall that if:

• ΔG < 0 or ΔG = (–); the reaction is spontaneous

• ΔG > 0 or ΔG = (+); the reaction is non-spontaneous


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