Chemistry
10th Edition
ISBN: 9781305957404
Author: Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher: Cengage Learning
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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/molarrow_forwardWhen 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 5.26 g of CsClO4(s) are dissolved in 103.30 g of water, the temperature of the solution drops from 22.98 to 19.81 °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 CsClO4(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water.arrow_forwardAn experiment is performed in the chemical lab, 405 J of heat is absorbed by a system and 285 J of work is done by the system. What is the change in internal energy for the process?arrow_forward
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