The equivalent conductivity of 0.0108 molar aniline hydrochloride is 118,6 ohm-1 cm-1 . When the solution saturated with aniline the equivalent conductivity decreased to 103.6 ohm-1 cm-1 . The same concentration these equivalent conductivity of HCl is 411.7 ohm-1 cm2 . Calculate the hydrolysis degree of aniline hydrochloride.  Explain the variation of the cell constant (K) with the amount of sample volume.

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Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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1)The equivalent conductivity of 0.0108 molar aniline hydrochloride is 118,6 ohm-1 cm-1 . When the solution saturated with aniline the equivalent conductivity decreased to 103.6 ohm-1 cm-1 . The same concentration these equivalent conductivity of HCl is 411.7 ohm-1 cm2 . Calculate the hydrolysis degree of aniline hydrochloride. 
Explain the variation of the cell constant (K) with the amount of sample volume. 

2) A strong electrolyte has an equivalent conductivity of 140 Ώ.cm . eq mol for a concentration of 2 x 10-4 eq.mol / L. The saturated solution corresponds to a concentration of 3.3 x 10-4 eq.mol / L and at an equivalent conductivity of 144.74 Ώ.cm . eq mol-1 . Determine the limit conductivity of this electrolyte.  

3) Calculate the activity coefficient of the chloride ion in MgCl2 10-3 mol / L and in LaCl3 of the same concentration. What can you conclude from this? 

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