When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 1.72 g of CaBr2(s) are dissolved in 107.30 g of water, the temperature of the solution increases from 23.27 to 25.26 °C. The heat capacity of the calorimeter
When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 1.72 g of CaBr2(s) are dissolved in 107.30 g of water, the temperature of the solution increases from 23.27 to 25.26 °C. The heat capacity of the calorimeter
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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When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. In the laboratory a general chemistry student finds that when 1.72 g of CaBr2(s) are dissolved in 107.30 g of water, the temperature of the solution increases from 23.27 to 25.26 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.79 J/°C. Based on the student's observation, calculate the enthalpy of dissolution of CaBr2(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. ΔHdissolution = ?? kJ/mol |
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