CHEM 1&2 Lab Manual & worksheets pg 181

CHEM 1&2 Lab Manual & worksheets pg 181 -...

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Experiment 17: Calorimetry General Chemistry I and II Lab Manual Dakota State University page 181 of 232 temperature is the maximum temperature reached on mixing. The heat of mixing, then, is simply H NaOH,mix =m T where T is the change in temperature and m is the mass of the total solution (take it to be 40 grams; we are assuming the density is 1.00 g/mol). In an analogous fashion, determine H HCl,mix . The total energy change, H total is determined the same way as above, but use the run
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Unformatted text preview: where you mixed the HCl and NaOH. To find the heat of reaction, note that ∆ H total = ∆ H rxn + ∆ H NaOH,mix + ∆ H HCl,mix Use the values you’ve calculated to find ∆ H rxn ; this is the heat of reaction. Divide this value by the number of moles of acid (or base, whichever is less) as calculated by the concentration of the acid or base and the volumes we’ve used to determine the molar heat of reaction....
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