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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 HCI. 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. -9 raction =9 sdution b. Calculate the AHrxn per mole of NaOH reacted. c. If the Styrofoam calorimeter (s 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 AHren per mole of NaOH reacted. 1.131 J/g °C) weighs 30.0 g, the glass %3D convery 1. 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 AHrxn and if they can be considered negligible in the calculations.

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 HCI. 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. -9 raction =9 sdution b. Calculate the AHrxn per mole of NaOH reacted. c. If the Styrofoam calorimeter (s 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 AHren per mole of NaOH reacted. 1.131 J/g °C) weighs 30.0 g, the glass %3D convery 1. 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 AHrxn and if they can be considered negligible in the calculations.

Chemistry for Engineering Students
Chemistry for Engineering Students
3rd Edition
ISBN:9781285199023
Author:Lawrence S. Brown, Tom Holme
Publisher:Lawrence S. Brown, Tom Holme
Chapter9: Energy And Chemistry
Section: Chapter Questions
Problem 9.79PAE: A student performing a calorimetry experiment combined 100.0 ml. of 0.50 M HCI and 100.0 ml. of 0.50...
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I need help answering 4d.
VOTEXPERIMENT 8 HEATS OF REACTION 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 HCI. 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. -9 rcaction =9 sulution 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 AHren 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 AHrxn and if they can be considered negligible in the calculations. 109
Transcribed Image Text:VOTEXPERIMENT 8 HEATS OF REACTION 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 HCI. 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. -9 rcaction =9 sulution 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 AHren 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 AHrxn and if they can be considered negligible in the calculations. 109
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