Yahoo Answers is shutting down on May 4th, 2021 (Eastern Time) and the Yahoo Answers website is now in read-only mode. There will be no changes to other Yahoo properties or services, or your Yahoo account. You can find more information about the Yahoo Answers shutdown and how to download your data on this help page.
chem help pleaseeeeeeeeeeeeeeee cell question?
1. Calculate the value of E°cell for a voltaic cell described in each of the following.
a. F2(g) is reduced to F−(aq) and Fe(s) is oxidized to Fe2+(aq).
b. Cu2+(aq) is displaced from solution by Zn(s).
c. The cell reaction is 2Cu+(aq)-->Cu2(aq)+Cu(s)
d. MgBr2(aq) is produced from Mg(s) and Br2(l).
1 Answer
- Old Science GuyLv 71 decade agoFavorite Answer
find the potential of the half reactions
the one which is more negative will be the oxidation
so reverse that one along with the sign of its potential
then
add the potentials
b)
Cu+2 + 2e- ---> Cu (+0.34v)
Zn+2 + 2e- ---> Zn (-0.76v)
reverse this one to get the actual half reaction
Zn ---> Zn+2 + 2e- (+0.76v)
then 0.34 + 0.76 = 1.10v
the standard cell potential
