more chemistry?

The activation energy (Ea) on a reaction diagram for an uncatalyzed reaction is generally ________ a catalyzed reaction

In a reaction the equilibrium constant for the forward reaction is Kf and the equilibrium constant of the backward reaction is Kb What is the relationship between Kf and Kb?

A simple dissociation reaction is written for each of the following acids Which one is least correct

Hydrochloric acid HCl(aq)->H+(aq)+Cl-(aq)

The ammonium ion NH4+(aq)->H+(aq)+NH3(aq)

Acetic acid HC2H3O2(aq)-->H+(aq)+C2H3O2-(aq)

The hydrated aluminum (III) ion Al(H2O)36+(aq)-->H+(aq)+Al(H2O)5OH2+(aq)

A 0.200 M solution of a weak acid, HA, is 9.4% ionized. Using this information, calculate Ka for HA

Which characteristic defines the main difference between a basic buffer system and an acidic buffer system?