For each pair of substances, circle the one with higher molar entropy (So). Justify each choice with a brief explanation.
Circle the substance with greater molar entropy. Why is its entropy greater?
(a) NaNO3(s) / NaNO3(aq)
(b) PCl3(g) / PCl5 (g)
(c) CH3CH2CH2CH3(g) / SO2(g)
(d) Br2(g) / F2(g)
(e) Fe(s) at 125 K / Fe(s) at 298 K