Consider the combustion of pentaborane-9 (B5H9 ): 2 B5H9 (l) + 12 O2 (g) → 5 B2O3 (s) + 9 H2O (l) Calculate the heat of reaction (in kJ) when 8.65 g B5H9 is combusted. Substance ΔH f (kJ/mol) B5H 9 (l) +73 B2O 3 (s) -1273 H2O (l) -286
Consider the combustion of pentaborane-9 (B5H9 ): 2 B5H9 (l) + 12 O2 (g) → 5 B2O3 (s) + 9 H2O (l) Calculate the heat of reaction (in kJ) when 8.65 g B5H9 is combusted. Substance ΔH f (kJ/mol) B5H 9 (l) +73 B2O 3 (s) -1273 H2O (l) -286
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
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Chapter16: Thermodynamics
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Problem 56E: Nitric acid, HNO3, can be prepared by the following sequence of reactions:...
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Question
Consider the combustion of pentaborane-9 (B5H9 ):
2 B5H9 (l) + 12 O2 (g) → 5 B2O3 (s) + 9 H2O (l)
Calculate the heat of reaction (in kJ) when 8.65 g B5H9 is combusted.
Substance
|
ΔH f (kJ/mol)
|
B5H 9 (l)
|
+73
|
B2O 3 (s)
|
-1273
|
H2O (l)
|
-286
|
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