#4 (Section 20.4) Cell Potentials
Electromotive force (emf) is the driving force due to what?
What (not who!) is SHE ?
Look at Fig. 20.11 and describe the spontaneous flow of electrons relative to the reduction potentials:
#5 (Section 20.5) Redox and Free Energy
Consider Faradayâs Equation: DG = - nFE
Under what condition of E is DG negative and spontaneous?
(Recall that in this equation E is define as emf and therefore can yield electrical work.)
#6 (Section 20.6)
Cell potentials under non-standard conditions are observed as a voltaic cell becomes discharged and the concentrations of the reactant and products change (thus, deviate from the standard conc.).
Consider the Nernst Equation: E = Eo - RT/nF ln Q
As the reaction proceeds in a voltaic cell the emf drops and eventually E = 0 (and DG = 0). What is happening to the Q value that causes E and DG values to decrease (ref. page 850, bottom).
#4 (Section 20.4) Cell Potentials
Electromotive force (emf) is the driving force due to what?
What (not who!) is SHE ?
Look at Fig. 20.11 and describe the spontaneous flow of electrons relative to the reduction potentials:
#5 (Section 20.5) Redox and Free Energy
Consider Faradayâs Equation: DG = - nFE
Under what condition of E is DG negative and spontaneous?
(Recall that in this equation E is define as emf and therefore can yield electrical work.)
#6 (Section 20.6)
Cell potentials under non-standard conditions are observed as a voltaic cell becomes discharged and the concentrations of the reactant and products change (thus, deviate from the standard conc.).
Consider the Nernst Equation: E = Eo - RT/nF ln Q
As the reaction proceeds in a voltaic cell the emf drops and eventually E = 0 (and DG = 0). What is happening to the Q value that causes E and DG values to decrease (ref. page 850, bottom).
Related textbook solutions
Basic Chemistry
Principles of Chemistry Molecular Approach
Chemistry: Structure and Properties
Principles of Chemistry Molecular Approach
Chemistry: A Molecular Approach
Chemistry: A Molecular Approach
Principles of Chemistry: A Molecular Approach
