2013 Final Q4 Part A


Moderators: Chem_Mod, Chem_Admin

Raymond_Guan_1H
Posts: 21
Joined: Fri Jul 15, 2016 3:00 am

2013 Final Q4 Part A

Postby Raymond_Guan_1H » Thu Mar 16, 2017 10:09 pm

How do I get n=4 for part A in question 3? I thought it was the amount of electrons, but I can't seem to get 4.

Simone Seliger 1C
Posts: 30
Joined: Fri Sep 25, 2015 3:00 am

Re: 2013 Final Q4 Part A

Postby Simone Seliger 1C » Thu Mar 16, 2017 11:37 pm

I am having the same problem :(

Michelle_Tan_1G
Posts: 35
Joined: Fri Jun 17, 2016 11:28 am

Re: 2013 Final Q4 Part A

Postby Michelle_Tan_1G » Fri Mar 17, 2017 10:36 pm

You look at the chemical equation and see that Fe (neutral charge) changes to 2Fe(OH)2 in the products, indicating Fe has a positive +2 charge. 2 e- are transferred, but there are 2 moles of Fe, so a total of 4 e- transferred, n=4.


Return to “Appications of the Nernst Equation (e.g., Concentration Cells, Non-Standard Cell Potentials, Calculating Equilibrium Constants and pH)”

Who is online

Users browsing this forum: No registered users and 0 guests