The amount of heat required to decompose a compound into its elements is _____________ the heat of formation of that compound from its elements?
Correct answer: D. Same as
- A. Less than
- B. More than
- C. Not related to
- D. Same as
Explanation
Decomposition and formation are reverse processes, so their heats have equal magnitudes and opposite signs. The heat required for decomposition therefore corresponds to the magnitude of the compound's heat of formation.
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