Hess's Law Lab Report

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The total change in energy is equal to the sum of the net reaction that is Hess’s Law the way I see it. It is important because it shows how energy is moved whether absorbed or released which is critical in science where logic and reason define all knowledge derived from the implications of science. Hess’s Law is used to determining difficult to measure energy changes such as the generation of hydrogen as a clean fuel in the example given in chem wiki (Shelly Cohen October 02 2013). It is also used in research of other possible fuels by finding the cost to produce it and comparing it to the amount of energy it will provide to find out if it is a worthwhile investment. The main objectives of this lab are to find the energy changes in reactions …show more content…
This data supports my hypothesis by showing that both reaction two and three lose energy and are exothermic. A deviation that occurred was a miscalculation during the experiment in which my partners and I measured the change in temperature at the wrong time which upon correction the data was not much different. The results follow the theories that have been approved. Some practical uses include energy synthesis as described above while theoretical uses are the energy of creatures and the energy provided by certain fuels as stated on chem wiki (Stephen lower and professor Emeritus 2007). There are no suggestions that come to mind for improving …show more content…
Then using the enthalpies found for reactions two and three I would find the enthalpy of reaction one the ideal reaction. Both reaction two and three are exothermic but reaction one is endothermic this is due to overall reaction one is building more bonds than it is breaking. The formula for finding the enthalpy of reaction one is as follows the change in enthalpy of reaction two combined with the inverse change in enthalpy of reaction three results in the enthalpy of reaction one. This indicates that the ideal reactions we are taught aren’t easily found so we must use Hess’s law and find the enthalpy of our ideal reaction using the two other reactions which occur in various

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