When a solid dissolves in water, the solution may become hotter or colder. The dissolution enthalpy (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 21.17 g BaBr2(s) is dissolved in 113.40 g water, the temperature of the solution increases from 24.37 to 27.48 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.54 J/ºC. Based on the student's observation, calculate the dissolution enthalpy of BaBr2(s) in kJ/mol. Assume the specific heat capacity of the solution is equal to the specific heat capacity of water. AdisH kJ/mol
When a solid dissolves in water, the solution may become hotter or colder. The dissolution enthalpy (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 21.17 g BaBr2(s) is dissolved in 113.40 g water, the temperature of the solution increases from 24.37 to 27.48 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.54 J/ºC. Based on the student's observation, calculate the dissolution enthalpy of BaBr2(s) in kJ/mol. Assume the specific heat capacity of the solution is equal to the specific heat capacity of water. AdisH kJ/mol
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 112AE: In a bomb calorimeter, the reaction vessel is surrounded by water that must be added for each...
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Transcribed Image Text:When a solid dissolves in water, the solution may become hotter or colder. The dissolution
enthalpy (dissolving) can be determined using a coffee cup calorimeter.
In the laboratory a general chemistry student finds that when 21.17 g BaBr2(s) is dissolved in 113.40 g water,
the temperature of the solution increases from 24.37 to 27.48 °C.
The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a
separate experiment to be 1.54 J/°C.
Based on the student's observation, calculate the dissolution enthalpy of BaBr2(s) in kJ/mol.
Assume the specific heat capacity of the solution is equal to the specific heat capacity of water.
AdisH =
kJ/mol
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