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 9.07 g of K2SO4(s) are dissolved in 110.50 g of water, the temperature of the solution drops from 23.80 to 20.79 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.88 J/°C. Based on the student's observation, calculate the enthalpy of dissolution of K₂SO4(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. AH dissolution kJ/mol Brook Cengage Leaming Thermometer Cardboard or Styrofoam lid Nested Styrofoam cups Reaction occurs in solution.

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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
9.07 g of K₂SO4(s) are dissolved in 110.50 g of water, the
temperature of the solution drops from 23.80 to 20.79 °C.
The heat capacity of the calorimeter (sometimes referred to
as the calorimeter constant) was determined in a separate
experiment to be 1.88 J/°C.
Based on the student's observation, calculate the enthalpy of
dissolution of K₂SO4(s) in kJ/mol.
Assume the specific heat of the solution is equal to the
specific heat of water.
Brook, Cengage Leaming
Thermometer
Cardboard or
Styrofoam lid
Nested
Styrofoam cups
-Reaction
occurs in
solution.
AH dissolution
=
kJ/mol
Transcribed Image Text: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 9.07 g of K₂SO4(s) are dissolved in 110.50 g of water, the temperature of the solution drops from 23.80 to 20.79 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.88 J/°C. Based on the student's observation, calculate the enthalpy of dissolution of K₂SO4(s) in kJ/mol. Assume the specific heat of the solution is equal to the specific heat of water. Brook, Cengage Leaming Thermometer Cardboard or Styrofoam lid Nested Styrofoam cups -Reaction occurs in solution. AH dissolution = kJ/mol
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