(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?
NEET Foundation 2022.
Biology Foundation for Class 10.
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(a)
Cell Repn:
Nernst Eqn :![E_{cell}=E^0cell-\frac{0.0591}{n}\log \frac{\left [ Al^{3+} \right ]^2}{[Ni^{2+}]^3}](https://learn.careers360.com/latex-image/?E_%7Bcell%7D%3DE%5E0cell-%5Cfrac%7B0.0591%7D%7Bn%7D%5Clog%20%5Cfrac%7B%5Cleft%20%5B%20Al%5E%7B3+%7D%20%5Cright%20%5D%5E2%7D%7B%5BNi%5E%7B2+%7D%5D%5E3%7D)
(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 conductivity
for weak electrolyte can be calculated by using Kohlrausch's Law.