Question 1
Consider the half-reaction: MnO
4-(
aq) + 8 H
+(
aq) + 5 e- → Mn
2+(
aq) + 4 H
2O(
l). The formation of MnO
4- from Mn
2+ occurs most readily when the solution is
◦ basic.
◦ neutral.
◦ acidic.
◦ The reaction is not dependent upon pH.
Question 2
Which is most often used in the laboratory to measure pH?
◦ a Daniell cell
◦ a glass electrode
◦ a conductivity cell
◦ a standard hydrogen electrode