calculating standard reduction potential for a reaction

Discussion of all aspects of cellular structure, physiology and communication.

Moderators: honeev, Leonid, amiradm, BioTeam

Post Reply
nickname
Garter
Garter
Posts: 17
Joined: Thu Nov 19, 2009 3:10 am

calculating standard reduction potential for a reaction

Post by nickname » Thu Nov 11, 2010 10:50 pm

I have to calculate the standard reduction potential for the reaction Cu(III) to Cu(II).

the following info is given and it says that I have to use the formula delta G= -nFE

1. CU3+ + 2e- ---> Cu+ E1= 1.28V

2. CU2+ + e- ---> Cu+ E2= 0.15V

3. Cu2+ + 2e- ----> Cu(s) E3= 0.34V

3. Cu+ + e- ----> Cu (s) E4= 0.52V

Should I use #s 1 &3 and do 1.28+ - 0.34= 0.94V

Then delta G = -2(96.5kj/mol)(0.94v)= -181.42?

It says that I should conver each E (i have to pick the correct ones) to delta G and then sum all the delta G values and finally convert the sum back to an E value.

If anyone could help me I will greatly appreciate it!

Thank you!

User avatar
JackBean
Inland Taipan
Inland Taipan
Posts: 5694
Joined: Mon Sep 14, 2009 7:12 pm

Post by JackBean » Mon Nov 15, 2010 8:16 am

just pick those reactions, which you can sum to Cu3+ -> Cu2+ reaction ;)
http://www.biolib.cz/en/main/

Cis or trans? That's what matters.

Post Reply

Who is online

Users browsing this forum: No registered users and 4 guests