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1. Use the following reactions to determine the Delta Hrxn for P4O10(s) + 6H2O(l) 4H3PO4(l)  4P(s) + 5O2(g)---> P4O10(s).     Delta H = -2984kJ  2H2(g) + O2(g)---> 2H2O(l)                     Delta H = -570kJ  2P(s) + 4O2(g) + 3H2(g)---> 2H3PO4(l).  Delta H = -2534kJ   B. Is the reaction exothermic or endothermic? C. Given Sof P4O10(s) = 228.9 J mol-1 K-1; Sof H2O(l) = 69.9 J mol-1 K-1; Sof H3PO4(l) = 241.98 J mol-1 K-1 calculate the DGrxn at 28.0oC. D. Is this reaction spontaneous or nonspontaneous?

1. Use the following reactions to determine the Delta Hrxn for P4O10(s) + 6H2O(l) 4H3PO4(l)  4P(s) + 5O2(g)---> P4O10(s).     Delta H = -2984kJ  2H2(g) + O2(g)---> 2H2O(l)                     Delta H = -570kJ  2P(s) + 4O2(g) + 3H2(g)---> 2H3PO4(l).  Delta H = -2534kJ   B. Is the reaction exothermic or endothermic? C. Given Sof P4O10(s) = 228.9 J mol-1 K-1; Sof H2O(l) = 69.9 J mol-1 K-1; Sof H3PO4(l) = 241.98 J mol-1 K-1 calculate the DGrxn at 28.0oC. D. Is this reaction spontaneous or nonspontaneous?

Chemistry
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
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1. Use the following reactions to determine the Delta Hrxn for P4O10(s) + 6H2O(l) 4H3PO4(l) 

4P(s) + 5O2(g)---> P4O10(s).     Delta H = -2984kJ 
2H2(g) + O2(g)---> 2H2O(l)                     Delta H = -570kJ 
2P(s) + 4O2(g) + 3H2(g)---> 2H3PO4(l).  Delta H = -2534kJ

 

B. Is the reaction exothermic or endothermic?

C. Given Sof P4O10(s) = 228.9 J mol-1 K-1; Sof H2O(l) = 69.9 J mol-1 K-1; Sof H3PO4(l) = 241.98 J mol-1 K-1 calculate the DGrxn at 28.0oC.

D. Is this reaction spontaneous or nonspontaneous?

 

 

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