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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 8.78 g CsCl(s) is dissolved in 111.10 g water, the temperature of the solution drops from 25.41 to 23.19 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Based on the student's observation, calculate the dissolution enthalpy of CSCI(s) in kJ/mol. Assume the specific heat capacity of the solution is equal to the specific heat capacity of water. AdişH = 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 8.78 g CsCl(s) is dissolved in 111.10 g water, the temperature of the solution drops from 25.41 to 23.19 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Based on the student's observation, calculate the dissolution enthalpy of CSCI(s) in kJ/mol. Assume the specific heat capacity of the solution is equal to the specific heat capacity of water. AdişH = kJ/mol

Chemistry: The Molecular Science
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 65QRT
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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 8.78 g CsCl(s) is dissolved in 111.10 g water, the temperature of the solution drops from 25.41 to 23.19 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Based on the student's observation, calculate the dissolution enthalpy of CSCI(s) in kJ/mol. Assume the specific heat capacity of the solution is equal to the specific heat capacity of water. AdisH = kJ/mol
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 8.78 g CsCl(s) is dissolved in 111.10 g water, the temperature of the solution drops from 25.41 to 23.19 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.57 J/°C. Based on the student's observation, calculate the dissolution enthalpy of CSCI(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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