Pentaborane B5H9(s) burns vigorously in 02 to give B203(s) and H20(1). Calculate AHrxn for the combustion of 5.00 mol of B5Hg. AH°F[B203(s)] =-1,273.5 kJ/mol AH°f[B5H9(s)] = 73.2 kJ/mol AH°f[H2O(1)] = -285.8 kJ/mol Multiple Choice - 8,790 kJ - 45,400 kJ 45,400 kJ - 22,700 kJ
Pentaborane B5H9(s) burns vigorously in 02 to give B203(s) and H20(1). Calculate AHrxn for the combustion of 5.00 mol of B5Hg. AH°F[B203(s)] =-1,273.5 kJ/mol AH°f[B5H9(s)] = 73.2 kJ/mol AH°f[H2O(1)] = -285.8 kJ/mol Multiple Choice - 8,790 kJ - 45,400 kJ 45,400 kJ - 22,700 kJ
Chemistry by OpenStax (2015-05-04)
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ISBN:9781938168390
Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Publisher:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark Blaser
Chapter5: Thermochemistry
Section: Chapter Questions
Problem 49E: When 2.50 g of methane burns in oxygen, 125 kJ of heat is produced. What is the enthalpy of...
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