Question

a. For the cell ZnZn?- (a=10--M) || Mg2+ (a=10-2 M) Mg, the standard reduction
potential for Zn and Mg are -0.764 V & -2.364 V respectively. According to this
cell write the half-cell reaction & overall cell reaction. Find Eº cell and AG and
predict if the cell reaction is spontaneous or not.
b. Calculate the specific conductance and molar conductance and equivalent
conductance of 0.0469 M NaOH, if the resistance offered and the cell constant are
60.2 ohm and 89.6 m, respectively.
6. Calculate the EMF of the following Zn-Ag cell at 22.3 °C, if conc. Of ZnSO4 and
AgNO3 are 0.191 M & 0.0289 M respectively. Given that E° Zn2- Zn = -0.76 V and
EºAg-Ag = +0.80 V.​

Answer 1

Answer:

(k+n)(k-n)=96

Both k,n must have the same parity. Hence we will try to find two factors of 96 such that both are even.

96 can be factorized as 2×48

4×24

6×16

8×12

The smaller factor =k−n and the bigger factor =k+n

Hence, the values of (n,k) are (23,25),(10,14),(5,11),(2,10)

Hence, there are 4 possible values of n.