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1. El cido frmico es un cido dbil con una K a =1.8x10 -4 . Una muestra de 240 ml de una solucin acuosa de

1. El cido frmico es un cido dbil con una K a =1.8x10 -4 . Una muestra de 240 ml de una solucin acuosa de cido frmico 0,5 M se titula con una solucin 0,5 M de la base fuerte NaOH.

a) Cul es el pH de la solucin antes de agregar cualquier base?

b) Cul es el pH en el punto medio de la titulacin?

c) Cul es el pH en el punto de equivalencia?

d) Cul es el pH a 10,0 mL pasado el punto de equivalencia?

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