Chemlab: Chemistry 3/5


Calorimetry 1: The Enthalpy of Formation of MgO

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Key Questions
Here are some questions to think about before, during and after this week's experiment:

1. What assumptions are made in using this series of experiments to find the heat of formation of MgO?

2. What conditions must be the same from one reaction to the next?

3.What chemical equations are used and how are they combined to find the heat of formation for MgO?

In answering the last question, you may find it helpful to use the applet Enthalpy and Hess's Law

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