1. Chemical Reactions: Hess
... by thermodynamic theory, which holds that enthalpy is a state function. Chemists have made great use of the law of Hess in establishing the heats of formation of compounds which are not easily formed from their constituent elements Hess's law states "for a chemical equation that can be written as the sum of two or more steps, the ... the total mass. Other source could be the presence of contaminates in the beaker, and the removal or HCl by the string rod. Conclusion: Because of Hess's Law we can find the heat of formation of any unknown reaction such as the one described above. Another w...
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- Grade Level: High School