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Calculating Delta Hf for CaC2

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Calcium carbide reacts with water to form acetylene and calcium hydroxide. From the following enthalpy data calculate Delta Hf for CaC2

DeltaHf H2O=-285.83 kj/mol
DeltaHf Ca (OH)2=-986.2 kj/mol
DeltaHfC2H2=226.77 kj/mol

Please provide a detailed explanation.

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Solution Preview

Generally, the net amount of energy released/absorbed in a chemical reaction can be calculated as such:

Net energy of reaction (delta H) = Sum of Hf's of products - Sum of Hf's of reactants

Now we must address the ...

Solution Summary

The solution calculates Delta Hf for CaCa2.