Answer
C(g).
Work Step by Step
Entropy increases from solid to gas for the same substance. So, C(g) has greater entropy.
From Table 16.1, we find that our prediction is true.
$S^{\circ}(C,g)=158.096\,JK^{-1}mol^{-1}$
$S^{\circ}(C,graphite)=5.740\,JK^{-1}mol^{-1}$
