Consider the galvanic cell, Cu(s) | Cu 2+ (aq) | | Ag + (aq) | Ag(s). Which one
ID: 871405 • Letter: C
Question
Consider the galvanic cell, Cu(s) | Cu 2+(aq) | | Ag + (aq) | Ag(s). Which one of the following changes to the cell would cause the cell potential to increase (i.e., become more positive)?
Consider the galvanic cell, Cu(s) | Cu 2+(aq) | | Ag + (aq) | Ag(s). Which one of the following changes to the cell would cause the cell potential to increase (i.e., become more positive)?
increase the mass of Cu(s) increase the [Ag +] concentration increase the [Cu 2+] concentration decrease the mass of Cu(s)Explanation / Answer
A)
Cu2+ + ?e? is in equilibrium with Cu+ +0.159
Ag+ + ?e? is in equilibrium with Ag(s) +0.7996
Ag+ will be reduced and Cu will be oxidized that si:
Ag+ --> Ag(s)
Cu(s) --> Cu2+
Number of electrons transferred = 2
Ecell = E