Calorimetry experiments for determining the enthalpy changes of reactions
1 mark · NormalWhich value must be measured directly in a calorimetry experiment in order to calculate the heat energy released using the equation Q = mcΔT?
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Correct option: The temperature change of the water
Common mistakes: choosing pressure or rate of reaction as the measured variable
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Marking points
A1 · 1 mark · Correctly identifies 'The temperature change of the water' as the required measurement.
Worked solution
The temperature change (ΔT) must be measured to use Q = mcΔT.