Solutions taken from solutions guide by Rob Phillips, Jane Kondev, Julie A. Theriot, Hernan G. Garcia and
Evgeni Frenkel.
Problem 9.8 (10 pts)
Part a) (4 pts)
•(1 pts) Attempt
•(2 pts) Equate the electric fields E(r) = Er(R)
•(1 pts) Obtain the expression for V(r)
Part b) (2 pts)
•(1 pts) Attempt
•(1 pts) Calculate the potential at surface (r=R)
Part c) (2 pts)
•(1 pts) Concentration of Na+(at surface)
•(1 pts) Concentration of Cl−(at surface)
Part d) (2 pts)
•(1 pts) Concentration of Na+(at r= 0.3 nm)
•(1 pts) Concentration of Cl−(at r= 0.3 nm)
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