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‘Freidrich Wilhelm Georg Kohlrausch was a German physicist who studied the electrical conductivity…
‘Freidrich Wilhelm Georg Kohlrausch was a German physicist who studied the electrical conductivity of electrolytic solutions. From 1875-1879 he performed numerous experiments with aqueous solutions of different salts, acids and other electrolytes. He concluded that each type of migrating ion has a specific conductivity, and it does not depend on the origin of the ion. In a simple way, his conclusions were applicable to strong electrolytes as well as more complex behaviour was observed for weak electrolytes.’
Source: https://doi.org/10.1002/elsa.202160008
(a)[1.0]
What did Kohlrausch mean when he said that each ion has specific conductivity which is independent of origin of ions?
(b)[2.0]
Explain the law proposed by Kohlrausch with example.
(c)[2.0]
How do you propose to calculate the molar conductivity of a weak electrolyte (acetic acid) by using his law?
Answer
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From ISC 2025 Practice Chemistry, question 97.