Electrochemistry and the Nernst Equation
Not what you're looking for?
1.Consider the following cell at equilibrium:
Mg(s) / Mg+2 (0.01 M) // OH- (?) / Mg(OH)2 (s) / Mg (s)
Given: Mg+2 + 2e- ---> Mg(s) Eo = -2.360 V
Mg(OH)2 (s) + 2e- ---> Mg(s) + 2 OH- Eo = -2.690 V
a) Write each half-reaction and the net cell reaction. Find the standard net cell potential.
b) Find the pH of the right cell when the cell is at equilibrium.
c) Draw the cell, clearly mark all the components, and show the anode and the cathode, and the direction of the flow of electrons. Which side of the cell is the reduction taking place?
Purchase this Solution
Solution Summary
Cell pH is found using the standard cell potential and the Nernst equation. Full working is shown and a digaram is included.
Solution Preview
1.Consider the following cell at equilibrium:
Mg(s) / Mg+2 (0.01 M) // OH- (?) / Mg(OH)2 (s) / Mg (s)
Given: Mg+2 + 2e- ↔ Mg(s) Eo = -2.360 V
Mg(OH)2 (s) + 2e- ↔ Mg(s) + 2 OH- Eo = -2.690 V
a) Write each half-reaction and the net cell reaction. Find the standard net cell potential.
Mg ↔ Mg2+ + 2e E0 = +2.360 V
Mg(OH)2 (s) + 2e- ↔ Mg(s) + 2 OH- Eo = -2.690 V
Mg(OH)2(s) ---> Mg2+ + 2 OH- E0cell = -0.330 V
When interpreting a cell diagram, the anode is always listed ...
Purchase this Solution
Free BrainMass Quizzes
Match Elements with their Symbols
Elements are provided: choose the matching one- or two-letter symbol for each element.
Thermochemistry
The quiz helps in revising basic concepts about thermochemistry.
Organic Chemistry Naming: Alkanes
This is a quiz which is designed to assist students with learning the nomenclature used to identify organic compounds. This quiz focuses on the organic compounds called Alkanes.
General Chemistry - Classification of Matter
This test will assess your knowledge on the classification of matter which includes elements, compounds and mixtures.