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One purpose of this lab was to demonstrate and maybe prove Hess's Law. When I performed the lab I got the following:
-mixing NaOH(s) into plain water released 1541 J of heat
-mixing NaOH(s) into HCl(aq) released 3498 J of heat
-mixing NaOH(aq) into HCl(aq) released 2000 J of heat Show that this data either supports or contradicts Hess's Law and be clear in your
explanation by using chemical equations and numerical calculations. Assume that all three parts use the same amount of NaOH and for the two parts using HCl(aq), the same amount of HCl was used as well. Hint: The sign of your values are important.
b. When you recorded temperatures why is it proper to report your values to the tenths digit even if the temperature is right on an integer (eg. report 30.0 not 30 C)?
c. Which process was the most exothermic? State your answer by writing out the chemical equation.
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