
A chemist runs a reaction that results in more stable bonds and orderly arrangement of the products versus the reactants. Which of the following is true of this reaction?

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Correct Answer: B. The enthalpy and entropy changes are negative
If the products have more stable bonds, that means they have less energy, and that energy must have been released, hence the change of enthalpy is negative. If the products are in a more orderly arrangement than the reactants, then the entropy decreased; thus the change in entropy is also negative, and the only answer left is B.
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