You Are Given Pure Samples of Pentane $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}(l)$

question 32

Multiple Choice

You are given pure samples of pentane, $\mathrm{CH}_{3} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{2} \mathrm{CH}_{3}(l)$ , and 1,3-pentadiene, $\mathrm{CH}_{2}=\mathrm{CHCH}=\mathrm{CHCH}_{3}(l)$ What prediction would you make concerning their standard molar entropies at 298 K?

• A) S\(\degree\)_pentane > S\(\degree\)_{1,3-pentadiene}
• B) S \(\degree\)_pentane < S\(\degree\)_{1,3-pentadiene}
• C) S\(\degree\)_pentane \(\approx\)S\(\degree\)_{1,3-pentadiene}
• D) S\(\degree\)_pentane  S\(\degree\)_{1,3-pentadiene} + 2*
• E) More information is needed to make reasonable predictions.

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