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In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added to 129.1 g of 1.1294 M HCl. The following data were obtained. Assume the density of each solution is 1.00 g/mL. The temperature of the solution rose 8.10 °C. a. Assuming the calorimeter, thermometer, and stirrer have a negligible impact on the AHran, calculate the AHxn (in kJ) for this reaction.

In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added to 129.1 g of 1.1294 M HCl. The following data were obtained. Assume the density of each solution is 1.00 g/mL. The temperature of the solution rose 8.10 °C. a. Assuming the calorimeter, thermometer, and stirrer have a negligible impact on the AHran, calculate the AHxn (in kJ) for this reaction.

General Chemistry - Standalone book (MindTap Course List)
General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.110QP: A 29.1-mL sample of 1.05 M KOH is mixed with 20.9 mL of 1.07 M HBr in a coffee-cup calorimeter (see...
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mainly c and d

4. In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added to 129.1 g of 1.1294 M HCl. The following data were obtained. Assume the density of each solution is 1.00 g/mL. The temperature of the solution rose 8.10 °C. a. Assuming the calorimeter, thermometer, and stirrer have a negligible impact on the AHrxn, calculate the AHxn (in kJ) for this reaction. b. Calculate the AHrxn per mole of NaOH reacted. c. If the Styrofoam calorimeter (s = 1.131 J/g °C) weighs 30.0 g, the glass thermometer (s = 0.840 J/g °C) weighs 20.0 g, and the aluminum stirrer (s = 0.900 J/g °C) weighs 10.0 g, calculate the AHxn per mole of NaOH reacted. d. The literature value of this reaction is -55.9 kJ/mole. Qualitatively compare the AHren from (c) and (d) and comment on the effects the calorimeter, thermometer, and stirrer have on the AHxn and if they can be considered negligible in the calculations.
Transcribed Image Text:4. In a neutralization reaction in a well-insulated calorimeter, 112.9 g of 1.2915 M NaOH were added to 129.1 g of 1.1294 M HCl. The following data were obtained. Assume the density of each solution is 1.00 g/mL. The temperature of the solution rose 8.10 °C. a. Assuming the calorimeter, thermometer, and stirrer have a negligible impact on the AHrxn, calculate the AHxn (in kJ) for this reaction. b. Calculate the AHrxn per mole of NaOH reacted. c. If the Styrofoam calorimeter (s = 1.131 J/g °C) weighs 30.0 g, the glass thermometer (s = 0.840 J/g °C) weighs 20.0 g, and the aluminum stirrer (s = 0.900 J/g °C) weighs 10.0 g, calculate the AHxn per mole of NaOH reacted. d. The literature value of this reaction is -55.9 kJ/mole. Qualitatively compare the AHren from (c) and (d) and comment on the effects the calorimeter, thermometer, and stirrer have on the AHxn and if they can be considered negligible in the calculations.
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