A student is using a coffee-cup calorimeter to determine the enthalpy change of the endothermic reac — Laboratory Chemistry Question
Question
A student is using a coffee-cup calorimeter to determine the enthalpy change of the endothermic reaction of two aqueous solutions. After both solutions are added to the cup, the student neglects to put the lid on the cup. This would cause the magnitude of the calculated ΔH° value to be:
A.
too small, since some heat will escape out of the cup.
B.
too large, since some heat will escape out of the cup.
C.✓ Correct
too small, since the solution will absorb heat from the room.
D.
too large, since the solution will absorb heat from the room.
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