AP Chemistryeasymcq1 pt
What is a calorimeter's purpose in measuring ΔH?
A.To isolate the reaction so heat transfers only to a known surroundings
B.To speed the reaction up
C.To add heat to the reaction
D.To prevent the reaction from occurring
Explanation
Core Concept
Insulation routes all heat into the water (or metal) inside, whose temperature change reveals the heat exchanged. Without isolation, heat leaks corrupt the measurement.
Correct Answer
ATo isolate the reaction so heat transfers only to a known surroundings
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