Question

2.) The standard EMF of the cell reaction Zn+Cu2+ → Cu+Zna is 1.10V at 25°C. The EMF for the
cell reaction when 0.1M Cu2+ and 0.1M Zn2solutions are used at 25°C, is

​

Answer 1

Answer:

E=E

0

−

n

0.059

logKwhereE

0

=1.10V

Zn+Cu

2+

(0.1M)→Zn

2+

(0.1M)+Cu

Thus, n=2. So, for this reaction

E=E

0

−

2

0.059

log

0.1

0.1

=E

0

=1.10V