Using the appropriate bond energies, calculate the heat of reaction ?H for the following reaction: You can find a ta...

Question

Question

Using the appropriate bond energies, calculate the heat of reaction ?H for the following reaction:

2 H N H 3 H H NEN

You can find a table of bond energies by using the Data button on the ALEKS toolbar.

Round your answer to the nearest kJ/mol

.Note: For clarity, all lone pairs have been omitted from the molecular structures.

Answer 1

Answer #1

Enthalphy fo reaction = Bond energies of bonds broken - Bodn enrgies of bonds formed

= 6 BE ( N-H) - 3 BE ( H-H) - BE ( N triple bond N)

= 6 ( 391) - 3 ( 436) - 941

= 97 KJ/mol

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Answer 2

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