Using Hess's Law determine the delta H for the formation of phosphorous pentachloride Note if the process is exothermic or endothermic PCl3 (s) + Cl2 (g) = PCl5 (s) deltaH = P4(s) + 6 Cl2(g) = 4PCl3(g) delta H= -2439 kJ 4 PCl5(g) = P4(s) + 10 Cl2 (s) delta H= +3438 kJ Is this reaction exothermic or endothermic?
Using Hess's Law determine the delta H for the formation of phosphorous pentachloride Note if the process is exothermic or endothermic PCl3 (s) + Cl2 (g) = PCl5 (s) deltaH = P4(s) + 6 Cl2(g) = 4PCl3(g) delta H= -2439 kJ 4 PCl5(g) = P4(s) + 10 Cl2 (s) delta H= +3438 kJ Is this reaction exothermic or endothermic?
Introductory Chemistry: A Foundation
9th Edition
ISBN:9781337399425
Author:Steven S. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Donald J. DeCoste
Chapter12: Chemical Bonding
Section: Chapter Questions
Problem 3CR
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Using Hess's Law determine the delta H for the formation of phosphorous pentachloride
Note if the process is exothermic or endothermic
PCl3 (s) + Cl2 (g) = PCl5 (s) deltaH =
P4(s) + 6 Cl2(g) = 4PCl3(g) delta H= -2439 kJ
4 PCl5(g) = P4(s) + 10 Cl2 (s) delta H= +3438 kJ
Is this reaction exothermic or endothermic?
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