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In this experiment we shall use simple insulated cup calorimetry to measure the enthalpy changes for two simple reactions. This will allow us to construct a Hess's Law triangle to calculate the enthalpy change for a thermal decomposition reaction which it is not possible to measure directly:
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CaCO3(s) ⇒ CaO(s) + CO2(g) |
Watch the video and record the data. Use the two reactions to construct a Hess's Law triangle in order to work out the enthalpy change for the reaction above. Check your answer here.