Question: Datos dados - PbI 2 (s) Pb 2+ (aq) + 2I - (aq) ( Ksp = [Pb 2+ ][I - ] 2 ) 5,0 ml

Datos dados - PbI 2 (s) <===> Pb 2+ (aq) + 2I - (aq) ( Ksp = [Pb 2+ ][I - ] 2 )

5,0 ml 0,0120 M Pb(NO 3 ) 2 2,0 mL 0,0300 M KI 3,0 mL 0,20 M KNO3 Volumen total = 10 ml Absorbancia de la solucin = 0,280 [ I - ] en moles/litro en equilibrio = 4,2

CALCULAR - a) El nmero inicial. de moles Pb2+ Respuesta b) El nmero inicial. de moles yo- c) No. de moles I - en el equilibrio d) N moles I - precipitado e) N moles Pb 2+ precipitados f) No. moles Pb 2+ en el equilibrio g) [Pb 2+ ] en equilibrio h) K sp PbI 2

Las respuestas de la a a la f estn todas elevadas a 10 -5 (mostrar clculos)

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