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Question

.com/ibiscms/mod/ibis/view.php?id=5106009 Jump to. -CHEM 4B-Spring18-TENNActivities and Due Dates HW 12 2/5/2018 06:00 AM3/100 PrintCalculatorPeriodic Table Question 6 of 27 General Chemistry 4th Edition University Science Books presented by Sapling Leaming For each pair, predict which molecule has the greater molar entropy under the same conditions (assume gaseous species): Entropy of Entropy of CH3CH2OH epoxyethane ethylene oxide) CH3 CH3CH2CH2CH2CH3 pentane H,C-C-CHs CH3 1,2-dimethylpropane O Previous Give Up & View Solution G Check Answer Ned

Explanation / Answer

Ethanol has greater molar entropy than epoxyethane. Entropy is measure of randomness or degrees of freedom of a system. Epoxyethane has a locked structure due to its ring structure thus limitiing its number of degrees of freedom.

Pentane has greater molar entropy than neopentane. The greater surface area of a long chain alkane increses its entropy compared to its branched counterpart.