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Considere las siguientes reacciones: 1. HA + OH^- = A^- + H2O 2. HA + H3O+ = H2A^+ + H2O 3. HA + H2O =

Considere las siguientes reacciones:

1. HA + OH^- = A^- + H2O

2. HA + H3O+ = H2A^+ + H2O

3. HA + H2O = H3O^+A^-

4. HA + OH^- = H3O^+ + A^-

5. A^- + H3O^+ = HA + H2O

6. A^- + H2O = HA + OH^-

7. A^- + OH^- = HA + O2^-

A. Cul de estas reacciones (ingrese solo el nmero de reaccin del 1 al 7) describe mejor cmo la adicin de OH- convierte el cido dbil en una base conjugada y forma una solucin amortiguadora?

B. Cul de las reacciones anteriores (ingrese solo el nmero de reaccin del 1 al 7) muestra cmo una solucin que contiene una base conjugada se puede convertir en una solucin tampn agregando un cido fuerte?

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