Chemistry: The Molecular Nature of Matter and Change 7th Edition

Published by McGraw-Hill Education
ISBN 10: 007351117X
ISBN 13: 978-0-07351-117-7

Chapter 20 - Problems: 20.24


See explanation below.

Work Step by Step

1 A long hydrocarbon chain can rotate and vibrate in more ways than a short one, so entropy increases with chain length. Hence CH3OH(l) has lower molar entropy than C2H5OH(l) 2 KClO3(s) has lower molar entropy than KClO3(aq) because KCLO3 in aqueous phase has more freedom of movement 3 Na(s) has lower entropy than K(s) because with heavier atom in same periodic group has more entropy
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