If an endothermic reaction is allowed to take place very rapidly in air, the temperature of the surrounding air will:
Correct answer: D. Decrease
- A. Remain constant
- B. Increase
- C. Either increase or decrease
- D. Decrease
Explanation
An endothermic reaction absorbs heat from its surroundings to proceed. If the reaction is rapid, it will quickly draw heat from the immediate surrounding air, causing a noticeable decrease in the air's temperature.
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About Thermochemistry and Energetics of Chemical Reactions
Thermochemistry measures energy changes in chemical reactions and distinguishes exothermic from endothermic processes. Work covers systems, surroundings and state functions, internal energy, the first law of thermodynamics, enthalpy and Hess's law, including the sign conventions used when heat enters or leaves a system.
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