Chemistry and Chemical Reactivity (9th Edition)

Published by Cengage Learning
ISBN 10: 1133949649
ISBN 13: 978-1-13394-964-0

Chapter 13 Solutions and Their Behavior - Study Questions - Page 505c: 54


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Boiling point elevation and vapor pressure depression are proportional to $i.m$ and assuming total ionic dissociation, i is the number of ions per compound. a) sugar 0.15m, Na2SO4: $3\times 0.10\ m=0.30\ m$ -> the Na2SO4 will have a higher boiling point b) NH4NO3 $2\times 0.30\ m=0.60\ m$, Na2SO4 $3\times 0.15\ m=0.45\ m$ -> NH4NO3 will have a higher vapor pressure (Na2SO4 will have a higher vapor pressure depression).
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