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Exercise 1 The molar conductivity of 0.0140 M solution of chloroacetic acid is 109.0 S cm² mol1, and the molar conductivity at infinite dilution of the acid is 389.5 S cm? mol. Calculate (a) the degree of dissociation in the solution, and (b) the ionization constant of the acid.

Exercise 1 The molar conductivity of 0.0140 M solution of chloroacetic acid is 109.0 S cm² mol1, and the molar conductivity at infinite dilution of the acid is 389.5 S cm? mol. Calculate (a) the degree of dissociation in the solution, and (b) the ionization constant of the acid.

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11:38 PM Thu Dec 3 * 55% Done 8-3 PDF A T T T E a weak electrolyte as its concentration becomes very small. dilute d =1 Exercise 1 3 The molar conductivity of 0.0140 M solution of chloroacetic acid is 109.0 S cm? mol1, and the molar conductivity at infinite dilution of the acid is 389.5 S cm2 mol1. Calculate (a) the degree of dissociation in the solution, and (b) the ionization constant of the acid. d = 0.79 0.01YO CO.7a) C1-0.39) [0.28; 1.52 x 10³] 389.5 Theory of interionic attraction The Arrhenius theory cannot account for the behavior of the molar conductivity of strong electrolytes, since these solutes are completely dissociated, at least in dilute solutions. Calculation of the degree of dissociation from the conductance ratio A / A° yields a value less than 100% (e.g. for 0.1 M KNO3 solution, a = 84%). © F. Sevilla III, 2020 !!!
Transcribed Image Text:11:38 PM Thu Dec 3 * 55% Done 8-3 PDF A T T T E a weak electrolyte as its concentration becomes very small. dilute d =1 Exercise 1 3 The molar conductivity of 0.0140 M solution of chloroacetic acid is 109.0 S cm? mol1, and the molar conductivity at infinite dilution of the acid is 389.5 S cm2 mol1. Calculate (a) the degree of dissociation in the solution, and (b) the ionization constant of the acid. d = 0.79 0.01YO CO.7a) C1-0.39) [0.28; 1.52 x 10³] 389.5 Theory of interionic attraction The Arrhenius theory cannot account for the behavior of the molar conductivity of strong electrolytes, since these solutes are completely dissociated, at least in dilute solutions. Calculation of the degree of dissociation from the conductance ratio A / A° yields a value less than 100% (e.g. for 0.1 M KNO3 solution, a = 84%). © F. Sevilla III, 2020 !!!
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