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En varios matraces aforados de 5 0 , 0 0 m L se midieron, exactamente, al cuotas de 5 , 0 m L de una

En varios matraces aforados de 50,00mL se midieron, exactamente, alcuotas de 5,0mL de una disolucin de fenobarbital y se llevaron a medio bsico con KOH. A cada matraz aforado se aadieron los siguientes volmenes de una disolucin patrn de fenobarbital de 2,000gmL:0,000;0,500; 1,00;1,50 y 2,00mL y se enrasaron. Las seales fluorimtricas de cada una de las disoluciones fueron: 3,26;4,80;6,41;8,02 y 9,56 respectivamente.
(a) Representar grficamente los datos.
(b) Calcular la concentracin de fenobarbital de la muestra problema utilizando la representacin grfica (a).
(c) Obtener por mnimos cuadrados una ecuacin para los datos.
(d) Determinar la concentracin de fenobarbital a partir de la ecuacin del apartado (c).
(e) Calcular la desviacin estndar de la concentracin obtenida en el apartado (d).

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