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For which one of the following electroly...

For which one of the following electrolyte solutions can we apply Kohlrausch's law to determine `Lambda_(m)^(@)` of the solution ? `CH_(3)COONa, HCOOH, NH_(4)Cl.`

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Kohlrausch's law is applicable for the weak electrolytes at infinite dilution. Among the given electrolytes only `HCOOH` is a weak electrolyte. Thus this law will only be applicable for `HCOOH.`
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