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Pregunta 1 a. La conductividad molar de una solucin acuosa de amoniaco 0,0100 M es de 9,6 Scm 2 mol -1 . Para NH 4

Pregunta 1

a. La conductividad molar de una solucin acuosa de amoniaco 0,0100 M es de 9,6 Scm 2 mol -1 . Para NH 4 Cl, o =129,8 Scm 2 mol -1 y las conductividades inicas molares de OH y Cl - son OH - = 174 Scm 2 mol -1 y Cl - = 65,6 Scm 2 mol -1 . Calcule la conductividad molar lmite, o , para NH 3 y el grado de ionizacin en una solucin 0,01 M. (5 puntos)

NH 3 (ac) + H 2 O (l) NH 4 + (ac) + OH - (ac)

b. La conductividad electroltica de una solucin saturada de AgCl en agua pura a 25 o C es 1,26x10 -6 -1 cm -1 superior a la del agua utilizada. Calcular la solubilidad de AgCl en agua si las conductividades inicas molares son: (5 puntos)

Ag + =61,9 -1 cm 2 mol -1 ;Cl - = 76,4 -1 cm 2 mol -1

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