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1.- (35 puntos) Determinar la concentracin de todas las especies de Ni2+ en un medio en el que se ajust el pH a un valor

1.- (35 puntos) Determinar la concentracin de todas las especies de Ni2+ en un medio en el que se ajust el pH a un valor de 9,25 utilizando un tampn preparado con NH4OH y HCl. La concentracin total de (amonio + amoniaco) es 0.200M, la del metal es 0.0015 M. No consideres las especies que forma el metal con el hidrxido pero considera las que se forman con el amoniaco.

KNH = 5,70X10-10

Log B Ni-NH3 = 2,67; Log B2 Ni-NH3 =4,79; Log B3 Ni-NH3 =6,40; LogB4NiNH3=7,47;

Log Bs Ni-NH3 =8,10; Log Be Ni-NH3 =8,01

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