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A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). First, a 8.000 g tablet of benzoic acid (C6H,CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 17.00 °C to 58.82 °C over a time of 10.3 minutes. Next, 4.430 g of ethanol (C₂H,OH) a are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 17.00 °C to 38.58 °C. 30₂(g) "bomb" Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below A "bomb" calorimeter. about this reaction: 1 + 3 H₂O (g) I stirrer C₂H₂OH (1) + 2CO₂(g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. Is this reaction exothermic, endothermic, or neither? 0 thermometer O exothermic O endothermic O neither chemical reaction water insulation Times 10 to an exponent

A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). First, a 8.000 g tablet of benzoic acid (C6H,CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 17.00 °C to 58.82 °C over a time of 10.3 minutes. Next, 4.430 g of ethanol (C₂H,OH) a are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 17.00 °C to 38.58 °C. 30₂(g) "bomb" Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below A "bomb" calorimeter. about this reaction: 1 + 3 H₂O (g) I stirrer C₂H₂OH (1) + 2CO₂(g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. Is this reaction exothermic, endothermic, or neither? 0 thermometer O exothermic O endothermic O neither chemical reaction water insulation Times 10 to an exponent

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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7- heat of reaction
82°F Sunny = OTHERMOCHEMISTRY Calculating heat of reaction from bomb calorimetry data This tin temperature of the water rises from 17.00 °C to 38.58 °C. Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: Is this reaction exothermic, endothermic, or neither? 1 C₂H,OH (1) + 30₂(g) 2C0₂(g) + 3 H₂O (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment. Calculate the reaction enthalpy AH per mole of C₂H₂OH. Explanation Check ▬ Q Search a O exothermic O endothermic O neither 0 kJ mol I' C "bomb" A "bomb" calorimeter. V chemical reaction 0/5 6 X © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center A A
Transcribed Image Text:82°F Sunny = OTHERMOCHEMISTRY Calculating heat of reaction from bomb calorimetry data This tin temperature of the water rises from 17.00 °C to 38.58 °C. Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: Is this reaction exothermic, endothermic, or neither? 1 C₂H,OH (1) + 30₂(g) 2C0₂(g) + 3 H₂O (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in the second experiment. Calculate the reaction enthalpy AH per mole of C₂H₂OH. Explanation Check ▬ Q Search a O exothermic O endothermic O neither 0 kJ mol I' C "bomb" A "bomb" calorimeter. V chemical reaction 0/5 6 X © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center A A
F nny www-awa ||| = OTHERMOCHEMISTRY cgi/x/ist.exe/10_0 Calculating heat of reaction from bomb calorimetry data A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). First, a 8.000 g tablet of benzoic acid (C6H,CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 17.00 °C to 58.82 °C over a time of 10.3 minutes. Next, 4.430 g of ethanol (C₂H,OH) are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 17.00 °C to 38.58 °C. rgmon Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: Is this reaction exothermic, endothermic, or neither? Explanation TE vou caid the reaction was ovathermic or ondothermic calculate the amount of heat that wa Check Q Search LOT stirrer C₂H₂OH(1) + 30₂(g) → 2C0₂(g) + 3 H₂O (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. O exothermic O endothermic O neither 0/5 thermometer chemical reaction "bomb" A "bomb" calorimeter. water insulation Andre Times 10 to an exponent © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | ^
Transcribed Image Text:F nny www-awa ||| = OTHERMOCHEMISTRY cgi/x/ist.exe/10_0 Calculating heat of reaction from bomb calorimetry data A student runs two experiments with a constant-volume "bomb" calorimeter containing 1100. g of water (see sketch at right). First, a 8.000 g tablet of benzoic acid (C6H,CO₂H) is put into the "bomb" and burned completely in an excess of oxygen. (Benzoic acid is known to have a heat of combustion of 26.454 kJ/g.) The temperature of the water is observed to rise from 17.00 °C to 58.82 °C over a time of 10.3 minutes. Next, 4.430 g of ethanol (C₂H,OH) are put into the "bomb" and similarly completely burned in an excess of oxygen. This time the temperature of the water rises from 17.00 °C to 38.58 °C. rgmon Use this information, and any other information you need from the ALEKS Data resource, to answer the questions below about this reaction: Is this reaction exothermic, endothermic, or neither? Explanation TE vou caid the reaction was ovathermic or ondothermic calculate the amount of heat that wa Check Q Search LOT stirrer C₂H₂OH(1) + 30₂(g) → 2C0₂(g) + 3 H₂O (g) Be sure any of your answers that are calculated from measured data are rounded to the correct number of significant digits. Note for advanced students: it's possible the student did not do these experiments sufficiently carefully, and the values you calculate may not exactly match published values for this reaction. O exothermic O endothermic O neither 0/5 thermometer chemical reaction "bomb" A "bomb" calorimeter. water insulation Andre Times 10 to an exponent © 2023 McGraw Hill LLC. All Rights Reserved. Terms of Use Privacy Center | ^
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