General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN:9781305580343
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Chapter6: Thermochemisty
Section: Chapter Questions
Problem 6.109QP: A 21.3-mL sample of 0.977 M NaOH is mixed with 29.5 mL of 0.918 M HCl in a coffee-cup calorimeter...
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Transcribed Image Text:Use the References to access important values if needed for this que
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.
Thermometer
In the laboratory a general chemistry student finds that when 2.54 g
of CuSO (s) are dissolved in 104.70 g of water, the temperature of
Cardboard or
Styrofoam lid
the solution increases from 25.03 to 27.70 °C.
The heat capacity of the calorimeter (sometimes referred to as the
calorimeter constant) was determined in a separate experiment to
Nested
be 1.55 J/°C.
Styrofoam
Based on the student's observation, calculate the enthalpy of
dissolution of CUSO (s) in kJ/mol.
Reaction
occurs in
solution.
Assume the specific heat of the solution is equal to the specific
heat of water.
AHdissolution
kJ/mol
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