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Author Question: Use the bond enthalpy data given to estimate the heat released when 25.0 g of acetylene gas, C2H2, ... (Read 81 times)

madimontg

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on: Nov 5, 2023

Question 1

Use bond energies to estimate the enthalpy of formation of HBr(g).
         BE(H–H)   = 436 kJ/mol
         BE(Br–Br) = 192 kJ/mol
         BE(H–Br)  = 366 kJ/mol
◦ +262 kJ/mol
◦ +104 kJ/mol
◦ +52 kJ/mol
◦ –52 kJ/mol
◦ –104 kJ/mol

Question 2

Use the bond enthalpy data given to estimate the heat released when 25.0 g of acetylene gas, C2H2, burns in excess oxygen to yield carbon dioxide and water vapor at 25°C.
         BE(C–C) = 347 kJ/mol
         BE(C≡C) = 812 kJ/mol
         BE(C=O in CO2) = 799 kJ/mol
         BE(C–H) = 414 kJ/mol
         BE(O–H) = 460 kJ/mol
         BE(O=O) = 498.7 kJ/mol
◦ 16.8 kJ
◦ 364 kJ
◦ 447 kJ
◦ 1180 kJ
◦ 1230 kJ
Chemistry ¦ Chang, Goldsby ¦ 11th Edition
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Marked as best answer by madimontg on Nov 5, 2023

delmiss

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Reply #1 on: Nov 5, 2023
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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madimontg

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

LegendaryAnswers

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Reply 3 on: Yesterday
Gracias!

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