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Una muestra de 20 tabletas de sacarina soluble (C6H4SO2CONNa) se disolvi en agua destilada y se diluy en un matraz volumtrico de 250,00 mL. Una

Una muestra de 20 tabletas de sacarina soluble (C6H4SO2CONNa) se disolvi en agua destilada y se diluy en un matraz volumtrico de 250,00 mL. Una alcuota de 25,00 ml de esta solucin se trat con 20,00 ml de AgnO3 0,08181 M. La reaccin es la siguiente:

C6H4SO2CONNa (aq) + Ag+ (aq) - C6H4SO2CONAg (s) + Na+ (aq)

Despus de eliminar el slido, el AgNO3 excedente se titul por retroceso con 2,81 ml de KSCN 0,04124 M. Calcule el nmero promedio de miligramos de sacarina en cada tableta. [Masa molar (g/mol) : C6H4SO2CONNa= 205.164]

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