Cracking the SAT Chemistry Subject Test

Questions   1–2 refer   to  the following.

(A) Heat    of  formation

(B) Work

(C) Entropy

(D) Gibbs   free    energy

(E) Enthalpy

    1.      Must    be  negative    if  reaction    proceeds    spontaneously   in  forward

direction
2. Must be positive if reaction proceeds spontaneously in reverse
direction

Both answers are D, and you know that simply by making the associations we
talked about. The computer that grades your test doesn’t care if you know why
the answer is D; it just wants to see the D oval filled in on your answer sheet.