destroyer gchem #28

[siba]

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Hi! Does anyone know why is Nerst equation used in the question first of all? If I were to start the problem, I wouldn't never think of it!

 

[pidbull]

i did not get this question either
and how come as B increases E increases, should it not be the opposite?

 

[Contach]

i just cracked my destroyer open for the first time since my exam to try and help you.

my q28 is different from yours. must be b/c i have a different version of destroyer.
can you post the q?

 

[pidbull]

i just cracked my destroyer open for the first time since my exam to try and help you.

my q28 is different from yours. must be b/c i have a different version of destroyer.
can you post the q?

oh thanks buddy
I got an older version

4H+ +O2 + 4e- --> 2H20

28- if sodium hydroxide is added and assuming O2 is at 1 atm and H+ = 1.0M, which statement is true?

a. the e value would not change since base is not part of this system
b. the e value would increase
c. the rxn quotient would take H20(l) into account

answer is none are correct. they use the nernst equation at the back. And they say as H+ decreases, so does E (EMF).