CHM 1046 Lecture Notes - Lecture 46: Standard Hydrogen Electrode, Electromotive Force, Electrolytic Cell
Document Summary
Decreasing strength as a reducing agent** more + > less + slide 23. A half-cell potential can be determined by setting up a half-cell with the standard hydrogen electrode (she) and then measuring the overall cell potential. For an electrochemical reaction to be spontaneous (voltaic): E is the cell voltage. that is the electromotive force that governs the ability of the cell to do work. In an electrolytic cell, one volt is the potential against which one requires one joule of energy to move one coulomb of charge. A voltaic cell can produce one joule of useful work when one coulomb of charge is passed through the circuit. A positive cell voltage and a negative gibbs free energy both correspond to a spontaneous process. Review slides 27, 30, 31, 32, 34, 35 examples. Review batteries/electrolysis: slides 36-42 and 45 example problem** Electrolysis involves a transfer of electrons by electric current.
