3-CHM150r2_Hess_Law_Lab_Assistant final.docx - Hess\u2019s Law Hands-On Labs Inc Version 42 Lab Report Assistant This document is not meant to be a

3-CHM150r2_Hess_Law_Lab_Assistant final.docx - Hess’s Law...

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Hess’s Law Hands-On Labs, Inc. Version 42-0158-00-02 Lab Report Assistant This document is not meant to be a substitute for a formal laboratory report. The Lab Report Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab reports by providing this information in an editable file which can be sent to an instructor. Exercise 1: Testing Hess’s Law Data Table 1. Temperature ( C) of the Solution (NaOH + HCl). Initial Temperature of NaOH ( C) 20.72 Initial Temperature of HCl ( C) 20.22 Average Initial Temperature of Two Separate Solutions ( C) 20.47 Highest Temperature of Mixture (May Be Extrapolated from Graph) ( C) 31.11 Change in Temperature of Mixture ( C), Δ T 10.64 Data Table 2. Temperature of Solution Every 20 Seconds. Time after mixing (min:sec) Temperature ( o C) Initial 21.2 0:20 29.56 0:40 30.61 1:00 31.06 1:20 31.11 1:40 31.11 2:00 31.06 2:20 31 2:40 30.94 3:00 30.89 3:20 30.83 3:40 30.72 4:00 30.61 4:20 30.5 4:40 30.33 5:00 30.28
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Graph 1. Reaction 1 (NaOH + HCl).
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