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in Electrochemistry by (33.4k points)
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Consider the equation, λmHCl = λmH+ + λmCl-

1. Is the above equation correct?

2. Explain the law.

3. Write the application of this law.

1 Answer

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Best answer

1. The above equation is correct.

2. Kohlrausch’s law. Molar conductance at infinite dilution of an electrolyte is the sum of the molar ionic conductivities at infinite dilution of the cations and anions present in the solution.

3. The application of this law :

  • To find the molar conductivity at infinite dilution (Λ°m) of weak electrolytes.
  • To find the degree of dissociation (α) of weak electrolytes. α = \(\frac{Λ_m}{Λ^0_m} \)
  • To determine the dissociation constant of weak electrolytes. Ka = \(\frac{c^2\alpha}{1-\alpha}\)  

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