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Author Question: Given the listed average bond energies, calculate the enthalpy change for the production of of ... (Read 63 times)

Starlight

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Question 1

Given the following bond lengths in pm:

NN, 145; NN, 123; BrBr, 228

What is the best estimate of the NBr bond length in NBr3 in pm?
◦ 373 pm
◦ 125 pm
◦ 351 pm
◦ 216 pm
◦ 561 pm

Question 2

Given the listed average bond energies, calculate the enthalpy change for the production of of methanol by the reaction:  

CO2(g) + 3 H2(g) → CH3OH(g) + H2O(g)

CO(360 kJ/mol)  CO(736 kJ/mol) HH(436 kJ/mol)    
HO(464 kJ/mol) HC(414 kJ/mol)
◦ +214 kJ
◦ +639 kJ
◦ 0 kJ
◦ -214 kJ
◦ -108 kJ


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Marked as best answer by Starlight on Jul 8, 2021

poopface

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Starlight

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Reply 2 on: Jul 8, 2021
YES! Correct, THANKS for helping me on my review


peter

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Reply 3 on: Yesterday
Great answer, keep it coming :)

 

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