A student dissolves 11.0 g of ammonium nitrate (NH,NO,) in 200. g of water in a well-insulated open cup. He then observes the temperature of the water fall from 23.0 °C to 18.1 °C over the course of 7.3 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH,NO3(s) NH(aq) + NO3(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. kJ kJ Calculate the reaction enthalpy AHe per mole of NH¼NO3. rxn mol
A student dissolves 11.0 g of ammonium nitrate (NH,NO,) in 200. g of water in a well-insulated open cup. He then observes the temperature of the water fall from 23.0 °C to 18.1 °C over the course of 7.3 minutes. Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction: NH,NO3(s) NH(aq) + NO3(aq) You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are rounded to 2 significant digits. Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the known and published values for this reaction. O exothermic Is this reaction exothermic, endothermic, or neither? O endothermic neither If you said the reaction was exothermic or endothermic, calculate the amount of heat that was released or absorbed by the reaction in this case. kJ kJ Calculate the reaction enthalpy AHe per mole of NH¼NO3. rxn mol
Chemistry & Chemical Reactivity
10th Edition
ISBN:9781337399074
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter5: Principles Of Chemical Reactivity: Energy And Chemical Reactions
Section: Chapter Questions
Problem 108SCQ
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Question
3.5
Transcribed Image Text:A student dissolves 11.0 g of ammonium nitrate (NH,NO,) in 200. g of water in a well-insulated open cup. He then observes the temperature of the
water fall from 23.0 °C to 18.1 °C over the course of 7.3 minutes.
Use this data, and any information you need from the ALEKS Data resource, to answer the questions below about this reaction:
NH,NO3(s) →
NH(aq) + NO,(aq)
You can make any reasonable assumptions about the physical properties of the solution. Be sure answers you calculate using measured data are
rounded to 2 significant digits.
Note for advanced students: it's possible the student did not do the experiment carefully, and the values you calculate may not be the same as the
known and published values for this reaction.
exothermic
Is this reaction exothermic, endothermic, or neither?
O endothermic
?
O neither
If you said the reaction was exothermic or endothermic, calculate the amount of
heat that was released or absorbed by the reaction in this case.
| kJ
kJ
Calculate the reaction enthalpy AHo per mole of NH,NO3.
rxn
mol
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