AIPMT PRELIMS2012Chemistry-Electrochemistry

AIPMT PRELIMS 2012 Chemistry Molar Conductivity MCQ Question

Type: MCQ-conceptual-Medium-Class 12

Limiting molar conductivity of NH₄OH (i.e., Λₘ(NH₄OH)) is equal to:

A

Λₘ(NH₄Cl) + Λₘ(NaOH) - Λₘ(NaCl)

B

Λₘ(NH₄Cl) + Λₘ(NaCl) - Λₘ(NaOH)

C

Λₘ(NaOH) + Λₘ(NaCl) - Λₘ(NH₄Cl)

D

Λₘ(NH₄OH) + Λₘ(NH₄Cl) - Λₘ(HCl)

Correct Answer

Option A

Detailed Explanation

According to Kohlrausch's Law of Independent Migration of Ions, the limiting molar conductivity of a weak electrolyte like NH₄OH can be calculated by adding the conductivities of its constituent ions from strong electrolytes.

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