I am performing a reaction, A → B, with ΔG°' = −5000 kJ/mol. I start the reaction with 10 mM A and no B. After allowing the reaction to proceed for 24 hrs at room temperature and atmospheric pressure, I analyze a sample of the reaction mix to find I now have 8 mM A and 2 mM B. Which of the following conclusions should I make?
A) The reaction has reached equilibrium. B) I should come back again later; equilibrium has not yet been reached. C) The formation of B from A is thermodynamically unfavorable, so I should find another starting material to make B. D) I must've screwed up; there's no way I could get that result with that ΔG°'