🤓 Based on our data, we think this question is relevant for Professor Kumar's class at Adelphi University.

ΔE or ΔH can be calculated as:

$\overline{){\mathbf{\u2206}}{\mathbf{H}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}{\mathbf{bond}}{\mathbf{}}{{\mathbf{energy}}}_{{\mathbf{reactants}}}{\mathbf{}}{\mathbf{-}}{\mathbf{}}{\mathbf{bond}}{\mathbf{}}{{\mathbf{energy}}}_{{\mathbf{products}}}\mathbf{}}\phantom{\rule{0ex}{0ex}}\mathbf{\u2206}\mathbf{H}\mathbf{}\mathbf{=}\mathbf{}\mathbf{(}\mathbf{BE}\mathbf{}{\mathbf{A}}_{\mathbf{2}}\mathbf{+}\mathbf{BE}\mathbf{}{\mathbf{B}}_{\mathbf{2}}\mathbf{)}\mathbf{}\mathbf{-}\mathbf{2}\mathbf{(}\mathbf{BE}\mathbf{}\mathbf{AB}\mathbf{)}$

If A_{2} is half the amount of AB, we can set up the equation as:

Consider the following reaction:

A_{2} + B_{2 }→ 2AB ΔE = -285 kJ

The bond energy for A_{2} is one-half the amount of the AB bond energy. The bond energy of B _{2} = 432 kJ/mol. What is the bond energy of A_{2}?

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Our tutors have indicated that to solve this problem you will need to apply the Bond Energy concept. If you need more Bond Energy practice, you can also practice Bond Energy practice problems.

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Based on our data, we think this problem is relevant for Professor Kumar's class at Adelphi University.

What textbook is this problem found in?

Our data indicates that this problem or a close variation was asked in Chemistry: An Atoms First Approach - Zumdahl 2nd Edition. You can also practice Chemistry: An Atoms First Approach - Zumdahl 2nd Edition practice problems.