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 12.87 g of BaCl;(s) are dissolved in 101.30 g of water, the temperature of the solution increases from 24.77 to 27.07 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.87 J^C. Based on the student's observation, calculate the enthalpy of dissolution of BaCly(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. AHolution kl/mol

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 12.87 g of BaCl;(s) are dissolved in 101.30 g of water, the temperature of the solution increases from 24.77 to 27.07 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.87 J^C. Based on the student's observation, calculate the enthalpy of dissolution of BaCly(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. AHolution kl/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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

Thermometer
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.
Cardboard or
Styrofoam lid
In the laboratory a general chemistry student finds that when 12.87 g of BaClz(s) are dissolved in 101.30 g of
water, the temperature of the solution increases from 24.77 to 27.07 °C.
The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a
separate experiment to be 1.87 J/C.
Nested
Styrofoam cups
Based on the student's observation, calculate the enthalpy of dissolution of BaClą(s) in kJ/mol.
Reaction
Assume the specific heat of the solution is equal to the specific heat of water.
occurs in
solution.
AHdissolution
kJ/mol

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