× Didn't find what you were looking for? Ask a question
Top Posters
Since Sunday
t
7
m
6
k
6
F
5
j
5
t
5
j
5
G
5
f
5
a
5
d
5
c
5
Home Q & A Board Science-Related Homework Help Chemistry (Moderator: Laser_3)
New Topic  
Annonn Annonn
wrote...
Posts: 213
Rep: 1 0
2 years ago
You construct a voltaic cell for the following chemical reaction:
Fe2+(aq) + Mg(s) → Fe(s) + Mg2+(aq)
The measured cell potential under standard conditions is +1.92 V. Given that E°red for Fe2+(aq) ⎟ Fe(s) is -0.45 V, what is E°red for Mg2+(aq) ⎟ Mg(s)?

+2.37 V

-2.37 V

+1.47 V

-1.47 V

4.74 V
Read 82 times
1 Reply
Replies
wrote...
#1
Educator
2 years ago
I believe what you do here is add the two numbers:

+1.92 V + (-0.45 V) = 1.47 V

We know left hand side electrode where oxidation occur acts as an anode, and the right hand side electrode where reduction takes place acts as an cathode.
New Topic      
Quick Reply
Explore
Post your homework questions and get free online help from our incredible volunteers
  1031 People Browsing
Start New Topic Take the Tour CoursesNew Study Tools Topics Trending Browse by Textbook
Live Chat
Gallery
  
 73
  
 1934
  
 203
Your Opinion
Previous poll results: What's your favorite coffee beverage?