The Application of Hess's Law in Coffee-cup Calorimetry
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Title: The Application of Hess's Law in Coffee-cup Calorimetry

Essay Details:

Subject: Science
Author:
Date: August 28, 2013
Level: University
Grade: A
Length: 11 / 3050

Essay text:

However, it can be difficult to derive the exact enthalpy in a reaction when multiple processes occur simultaneously. A method to circumvent this problem is outlined in Hess’s Law which was established in 1840. Hess’s Law states that the steps taken to determine the enthalpy of a reaction do not matter because the end results will be the same. This is the principle used for both parts of this experiment. In Part I of the experiment, two different reactions are performed to determine the enthalpy of formation for magnesium oxide. One reaction will involve only Mg, and the other will involve MgO – both will react with 1M HCl...

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