Adding 4.28 g of NH, NO, (s) to 150 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt) resulted in a decrease NH,NO3 (s) in water in kJ/mol. Assume the solution (whose mass is 154.3 g) has a specific heat capacity of 4.2 J/g K. (Cold packs take advantage of the fact that dissolving ammonium nitrate in water is an endothermic process.) temperature from 18.4 °C to 16.5 °C. Calculate the enthalpy change for dissolving ACE A cold pack uses the endothermic enthalpy of a solution of ammonium nitrate. Enthalpy change = kJ/mol
Adding 4.28 g of NH, NO, (s) to 150 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt) resulted in a decrease NH,NO3 (s) in water in kJ/mol. Assume the solution (whose mass is 154.3 g) has a specific heat capacity of 4.2 J/g K. (Cold packs take advantage of the fact that dissolving ammonium nitrate in water is an endothermic process.) temperature from 18.4 °C to 16.5 °C. Calculate the enthalpy change for dissolving ACE A cold pack uses the endothermic enthalpy of a solution of ammonium nitrate. Enthalpy change = kJ/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 41PS: Adding 5.44 g of NH4NO3(s) to 150.0 g of water in a coffee-cup calorimeter (with stirring to...
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Transcribed Image Text:Adding 4.28 g of
NH,NO3 (s) to 150 g of water in a coffee-cup calorimeter (with stirring to dissolve the salt) resulted in a decrease in temperature from 18.4 °C to 16.5 °C. Calculate the enthalpy change for dissolving
NH,NO3 (s) in water in kJ/mol. Assume the solution (whose mass is 154.3 g) has a specific heat capacity of 4.2 J/g K. (Cold packs take advantage of the fact that dissolving ammonium nitrate in water is an endothermic process.)
ACE
A cold pack uses the endothermic enthalpy of a solution of ammonium nitrate.
Enthalpy change =
kJ/mol
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