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Electrochemistry question

2013 · Q87
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Electrochemistry question

2013 · Q87

NEETChemistryElectrochemistryMCQ+4 / −1
At 25oC molar conductance of 0.1 molar aqueous solution of ammonium hydroxide is 9.54 ohm−-−1 cm2 mol−-−1 and at infinite dilution its molar conductance is 238 ohm−-−1 cm2 mol−-−1. The degree of ionisation of ammonium hydroxide at the same concentration and temperature is
  1. A
    4.008%
  2. B
    40.800%
  3. C
    2.080%
  4. D
    20.800%
View written solutionFree

Correct answer: A

Degree of dissociation(α\alpha α) = 9.54238{{9.54} \over {238}}2389.54​ = 0.04008 = 4.008%

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