Problem: Can you use an approach similar to Hess's law to calculate the change in internal energy, E, for an overall reaction by summing the E values of individual reactions that add up to give the desired overall reaction?

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ΔH and ΔE are both state functions. A state function is a property whose value does not depend on the path taken to reach that specific value.

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Problem Details

Can you use an approach similar to Hess's law to calculate the change in internal energy, E, for an overall reaction by summing the E values of individual reactions that add up to give the desired overall reaction?

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What scientific concept do you need to know in order to solve this problem?

Our tutors have indicated that to solve this problem you will need to apply the Enthalpy of Formation concept. You can view video lessons to learn Enthalpy of Formation. Or if you need more Enthalpy of Formation practice, you can also practice Enthalpy of Formation practice problems.