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According to Hess's Law: AHReaction = AHsolution + AHNeutralization %3D Calculated AHR Percent Error

According to Hess's Law: AHReaction = AHsolution + AHNeutralization %3D Calculated AHR Percent Error

Chemistry
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter1: Chemical Foundations
Section: Chapter Questions
Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...
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According to Hess's Law: AHReaction = AHsolution + AHNeutralization %3D Calculated AHR Percent Error
Transcribed Image Text:According to Hess's Law: AHReaction = AHsolution + AHNeutralization %3D Calculated AHR Percent Error
Trial 1 Trial 2 Mass of stoppered flask + NaOH pellets (g) 34.98 34.98 Mass of empty stoppered flask (g) 32.47 32.47 Mass of NaOH (g) 2.01 2.01 Mass of Calorimeter + Solution (g) 109.89 109.89 Mass of Calorimeter empty (g) 8.78 8.78 Mass of Solution (g) 101.11 101.11 Initial Temperature ("C) 22.80 22.80 Final Temperature ("C) 32.20 32.20 AT = (Tinal - Tinitial 9.4 9.42 913.37 913.37 9calorimeter = (0.961 cal/g "C)-(m)-(AT) -913.37 -913.37 Areaction = -qcalorimeter 0.0502 0.0502 # moles NaoH = 9NAOH/(40 g/mol) -18194.6 -18194.6 AHR = greaction /# moles NaOH (cal/mol) DFocus ot Predictions: On Accessibility: Good to go
Transcribed Image Text:Trial 1 Trial 2 Mass of stoppered flask + NaOH pellets (g) 34.98 34.98 Mass of empty stoppered flask (g) 32.47 32.47 Mass of NaOH (g) 2.01 2.01 Mass of Calorimeter + Solution (g) 109.89 109.89 Mass of Calorimeter empty (g) 8.78 8.78 Mass of Solution (g) 101.11 101.11 Initial Temperature ("C) 22.80 22.80 Final Temperature ("C) 32.20 32.20 AT = (Tinal - Tinitial 9.4 9.42 913.37 913.37 9calorimeter = (0.961 cal/g "C)-(m)-(AT) -913.37 -913.37 Areaction = -qcalorimeter 0.0502 0.0502 # moles NaoH = 9NAOH/(40 g/mol) -18194.6 -18194.6 AHR = greaction /# moles NaOH (cal/mol) DFocus ot Predictions: On Accessibility: Good to go
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