Question

(i) State Kohlrausch law.

(ii) Calculate the emf of the following cell at 298 K:

Al(s)/Al3+ (0.15M)//Cu2+(0.025M) /Cu(s)

(Given Eo

(Al3+/Al) = -1.66 V, Eo

(Cu2+/Cu) = 0.34V, log 0.15 = -0.8239, log 0.025 = -

1.6020)
​

Answer 1

Answer:

Kirchhoff's circuit laws are two equalities that deal with the current and potential difference in the lumped element model of electrical circuits. They were first described in 1845 by German physicist Gustav Kirchhoff. This generalized the work of Georg Ohm and preceded the work of James Clerk Maxwell.