HI(g) Has a ΔGf° That Is Small and Positive, So

Multiple Choice

HI(g) has a ΔGf° that is small and positive, so HI should dissociate to some extent but its activation energy is high. HI(g) is stable at room temperature. Chemists would describe the reason for the very slow dissociation reaction as:

A) thermodynamically controlled
B) the ΔGf° is wrong
C) the reaction is not slow
D) the reaction is kinetically controlled
E) the molecules can collide with each other