question

(a) represent the cell in which the following reaction takes place :

calculate its emf if .

(b) how does molar conductivity vary with increase in concentration for strong electrolyte and weak electrolyte? how can you obtain limiting molar conductivity  for weak electrolyte? 

 

 

 

 

 

 

 

 

(a)

cell repn:

nernst eqn :

 

(b) with increase in temperature, the greater inter-ionic attraction retard the motion of the ions and therefore the molar conductivity falls in case of both strong and weak electrolytes.

the limiting molar conductivityfor weak electrolyte can be calculated by using kohlrausch's law.