14.43

Moderators: Chem_Mod, Chem_Admin

Parsia Vazirnia 2L
Posts: 44
Joined: Fri Jul 22, 2016 3:00 am

14.43

Postby Parsia Vazirnia 2L » Tue Feb 07, 2017 8:02 pm

Can someone explain number 43 in the homework? I do not understand the explanation given in the beginning of the problem in the solutions manual

Chem_Mod
Posts: 18400
Joined: Thu Aug 04, 2011 1:53 pm
Has upvoted: 435 times

Re: 14.43

Postby Chem_Mod » Tue Feb 07, 2017 11:36 pm

When constructing the cell, you have to consider what half reactions give the overall cell a positive potential. Hydrogen cells have a potential of zero, so the tin is either being reduced or oxidized to yield a positive voltage. Based on that, you then use the Nernst equation to determine the concentration of H+ in solution and calculate the pH from that value.


Return to “Galvanic/Voltaic Cells, Calculating Standard Cell Potentials, Cell Diagrams”

Who is online

Users browsing this forum: No registered users and 2 guests