Chemistry Class 12 NCERT Solutions: Chapter 3 Electrochemistry Part 7
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Q: 10. The conductivity of sodium chloride at has been determined at different concentrations and the results are given below:
Concentration
Calculate for all concentrations and draw a plot between and. Find the value of .
Answer:
Given,
Then,
Given,
Then,
Given,
Then,
Given,
Then,
Given,
Then,
Now, we have the following data:
 0.0316  0.1  0.1414  0.2236  0.3162  

 118.5  115.8  111.1  106.74 
At zero concentration value of = 124 so that the value of = 124.0
Q: 11. Conductivity of. Calculate its molar conductivity and if for acetic acid is , what is its dissociation constant?
Answer:
Given,
Then, molar conductivity,
Again,
Now,
Dissociation Constant,