Question

Average 솨 Verify Hess's L Average ΔΗΝ + Average ΔΗs MR, calculated _ AN: To calculate AHR. calculated take the sum of Average ΔΗΝ and A 4. from question 3. Compare this value to AHR. experimental from question 3. J/mol J/mol -J/mol _ J/mol as compared to ΔHR, experimental- experimental ween ΔΗR, calculated and your measured value ofdHR using the following formula IAHR.calculated- AHR,experimental l AHR,experimental % error 6. Calculate the percent error between your experimental value of AHR and the accepted value of from question one. (note the difference in units between your accepted and experimental. You must convert kJ/mol to J/mol prior to calculating % error) ΙΔΗο(accepted)-ΔΗ R (experimental)! 1-x 100 % % error AHR (accepted) Does this experimental process support Hess's law? Explain why or why not. List at least one way of improving your results. 7. REACTION 1( AHN) HCI(aq) + NaOH(aa) TRIAL 1 ass of Empty Calorimeter lass of Calorimeter + Solution After 7 minute trial) TRIAL 2 0 30.160 9.8409 Mass of Solution Initial Temperature (C) Final Temperature (C) dT = Tfinal-Tinitial (°C ) REACTION 2 (AHs) H20)+ NaOH(s) pellets TRIAL 1 TRIAL 2 Mass of NaOH pellets Moles of NaOH Mass of Empty Calorimeter Mass of Calorimeter + Solution (After 7 minute trial) Mass of Solution 0,05o 635 .3309 Gl Initial Temperature (C) Final Temperature (C) T = Tinal-Tinitial (°C ) (oc REACTION 3 (AHR) HCl(aq) + NaOH(s) pellets TRIAL 2 TRIAL 1 219 Mass of NaOH pellets Moles of NaOH Mass of Empty Calorimeter Mass of Calorimeter + Solution (After 7 minute trial) Mass of Solution 1.3449 8.8559 Initial Temperature (C) Final Temperature (C) AT = Tfinal-Tinitial (10) Reaction 3 SPECIFIC HEATS FOR REACTIONS (Cp Reaction 2 Reaction 1 3.93 Jgc4.02 Jg C 4.02 J/gC Specific Heat (Cpson 91

Answer 1

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