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At 291 K, the molecular conductivities of dilutions of NH 4 Cl, NaOH are 129.8, 217.4 A, 108.9 ohm −1 cm 2 mol −1 respectively. If molar conductivity of centinormal solution of NH 4 OH is 9.33 ohm −1 cm 2 mol −1 . What is the percentage dissociation of NH 4 OH at this dilution? (A) 0.392 (B) 39.2 (C) 3.92 (D) 0.039

      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

Grade:11

1 Answers

Amit Saxena
35 Points
7 years ago

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% dissociation = 0.03915 × 100 = 3.915% 

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