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Grade 11Engineering Entrance Exams

At 291 K, the molecular conductivities of dilutions of NH4Cl, NaOH are 129.8, 217.4 A, 108.9 ohm−1 cm2 mol−1 respectively. If molar conductivity of centinormal solution of NH4OH is 9.33 ohm−1 cm2 mol−1. What is the percentage dissociation of NH4OH at this dilution?

(A) 0.392

(B) 39.2

(C) 3.92

(D) 0.039

Profile image of Radhika Batra
12 Years agoGrade 11
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1 Answer

Profile image of Amit Saxena
12 Years ago

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% dissociation = 0.03915 × 100 = 3.915% 


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