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 505d: 73

Answer

See the answer below.

Work Step by Step

By definition: $\Delta H^0_{soln}=\Delta H^0_f(aq)- \Delta H^0_f(s)$ Li2SO4: $\Delta H^0_{soln}=-1464.4-(-1436.4)=-28\ kJ/mol$ -> exothermic K2SO4: $\Delta H^0_{soln}=-1413.0-(-1437.7)=+24.7\ kJ/mol$ -> endothermic From table 13.1: LiCl: $\Delta H^0_{soln}=-445.6-(-408.7)=-36.9\ kJ/mol$-> exothermic KCl: $\Delta H^0_{soln}=-419.5-(-436.7)=+17.2\ kJ/mol$ -> endothermic Both lithium salts have exothermic solubilization, while both potassium salts have endothermic ones.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.