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Author Question: Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). Calculate Hrxn for the ... (Read 61 times)

Facerro

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Pentaborane B5H9(s) burns vigorously in O2 to give B2O3(s) and H2O(l). Calculate ΔHrxn for the combustion of 5.00 mol of B5H9.
         ΔH°f[B2O3(s)] = –1,273.5 kJ/mol
         ΔH°f[B5H9(s)] = 73.2 kJ/mol
         ΔH°f[H2O(l)] = –285.8 kJ/mol
◦ – 45,400 kJ
◦ 45,400 kJ
◦ – 22,700 kJ
◦ – 9,090 kJ
◦ – 8,790 kJ


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Marked as best answer by Facerro on Nov 5, 2023

Sha

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Facerro

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Reply 2 on: Nov 5, 2023
Thanks for the timely response, appreciate it


mammy1697

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Reply 3 on: Yesterday
YES! Correct, THANKS for helping me on my review

 

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