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Plotting 1 / Λ m against cΛ m for aqueous solutions of a monobasic weak acid ( HX ) resulted in a straight line with y - axis intercept of P and slope of S . The ratio P / S is Λ m = molar conductivity Λ m o = limiting molar conductivity c = molar concentration K a = dissociation constant of HX

Options

  1. AK a Λ m o
  2. BK a Λ m o / 2
  3. C2   K a Λ m o
  4. D1 / K a Λ m o

Correct answer

A. K a Λ m o

Step-by-step solution

The degree of dissociation is the ratio of molar conductivity to the limiting molar conductivity. α = Λ m Λ m o The equilibrium reaction is given below,                                                   HX ⇌ H + + X - initial                                     c      

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