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Exothermic and Endothermic Processes
Worksheet
Grade Level
Chemistry
11.76 Exothermic and Endothermic Processes
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A student claims, "The solution got cooler, so the products must have lower enthalpy than the reactants." What is the best response?
A
Cooling surroundings proves the reaction released heat, so products are lower in enthalpy.
B
Cooling surroundings usually indicates the reaction absorbed heat, so products are higher in enthalpy for the reaction system.
C
Temperature change never gives evidence about heat flow.
D
Cooler products always mean lower enthalpy, regardless of heat transfer.
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